bump kcp-sys: 14 review fixes on rustdesk-patches (6e44b93 -> fa51c15)

Picks up the handshake-recovery work plus the review round on top of it:
ABBA deadlock between the endpoint's two DashMaps, graceful-close tail
truncation, mid-stream hole on ikcp_send failure, FIN retransmission for
lost-FIN half-open hangs, SYN-ACK budget burned on dropped packets,
spurious ConnectTimeout after a completed handshake, accept-backlog
overflow stranding conns, aliasing UB in the output callback, and the
log-facade/throttling cleanup (per-packet sites no longer reach the
debug-level file logger, peer-rate warns throttled).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

Cargo.lock

@@ -2281,7 +2281,7 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "330c60081dcc4c72131f8eb70510f1ac07223e5d4163db481a04a0befcffa412"
 dependencies = [
- "libloading 0.8.4",
+ "libloading 0.7.4",
 ]
 
 [[package]]
@@ -2784,7 +2784,7 @@ dependencies = [
  "is-terminal",
  "lazy_static",
  "log",
- "nu-ansi-term 0.49.0",
+ "nu-ansi-term",
  "regex",
  "thiserror 1.0.61",
 ]
@@ -4258,7 +4258,7 @@ dependencies = [
 [[package]]
 name = "kcp-sys"
 version = "0.1.0"
-source = "git+https://github.com/rustdesk-org/kcp-sys?branch=rustdesk-patches#acd13bad5248c7ea0f4c0595a627c308af210fb1"
+source = "git+https://github.com/rustdesk-org/kcp-sys?branch=rustdesk-patches#fa51c1574318c6d8938697223c147a1a446f7ef1"
 dependencies = [
  "anyhow",
  "auto_impl",
@@ -4273,8 +4273,6 @@ dependencies = [
  "thiserror 2.0.17",
  "tokio",
  "tokio-util",
- "tracing",
- "tracing-subscriber",
  "zerocopy 0.7.34",
 ]
 
@@ -4408,7 +4406,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e310b3a6b5907f99202fcdb4960ff45b93735d7c7d96b760fcff8db2dc0e103d"
 dependencies = [
  "cfg-if 1.0.0",
- "windows-targets 0.52.6",
+ "windows-targets 0.48.5",
 ]
 
 [[package]]
@@ -5130,16 +5128,6 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
-[[package]]
-name = "nu-ansi-term"
-version = "0.46.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
-dependencies = [
- "overload",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "nu-ansi-term"
 version = "0.49.0"
@@ -5803,12 +5791,6 @@ dependencies = [
  "serde_json 1.0.118",
 ]
 
-[[package]]
-name = "overload"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
-
 [[package]]
 name = "owned_ttf_parser"
 version = "0.25.1"
@@ -7690,15 +7672,6 @@ dependencies = [
  "tzdb 0.5.10",
 ]
 
-[[package]]
-name = "sharded-slab"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
-dependencies = [
- "lazy_static",
-]
-
 [[package]]
 name = "shared_library"
 version = "0.1.9"
@@ -8428,16 +8401,6 @@ dependencies = [
  "syn 2.0.98",
 ]
 
-[[package]]
-name = "thread_local"
-version = "1.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b9ef9bad013ada3808854ceac7b46812a6465ba368859a37e2100283d2d719c"
-dependencies = [
- "cfg-if 1.0.0",
- "once_cell",
-]
-
 [[package]]
 name = "threadpool"
 version = "1.8.1"
@@ -8817,32 +8780,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9d12581f227e93f094d3af2ae690a574abb8a2b9b7a96e7cfe9647b2b617678"
 dependencies = [
  "once_cell",
- "valuable",
-]
-
-[[package]]
-name = "tracing-log"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
-dependencies = [
- "log",
- "once_cell",
- "tracing-core",
-]
-
-[[package]]
-name = "tracing-subscriber"
-version = "0.3.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8189decb5ac0fa7bc8b96b7cb9b2701d60d48805aca84a238004d665fcc4008"
-dependencies = [
- "nu-ansi-term 0.46.0",
- "sharded-slab",
- "smallvec",
- "thread_local",
- "tracing-core",
- "tracing-log",
 ]
 
 [[package]]
@@ -9238,12 +9175,6 @@ dependencies = [
  "bindgen 0.65.1",
 ]
 
-[[package]]
-name = "valuable"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
-
 [[package]]
 name = "vcpkg"
 version = "0.2.15"