cmake: Ignore LNK4099 warning

Despite building the PDBs for qrcodegencpp debug builds, we do not
currently ship those PDBs, so MSVC emits an LNK4099 warning, which
causes a build failure. It's unlikely that we'll need to debug in linked
dependencies, so we can ignore this warning. Should we decide in the
future to ship PDBs for these dependencies, the warning would no longer
be emitted, and this flag would be superfluous without requiring a
change. For now, let's make sure we can build in Debug.

CMakeLists.txt

@@ -168,4 +168,6 @@ if(OS_WINDOWS)
     TARGET obs-websocket
     APPEND
     PROPERTY AUTORCC_OPTIONS --format-version 1)
+
+  target_link_options(obs-websocket PRIVATE /IGNORE:4099)
 endif()

cmake/legacy.cmake

@@ -155,6 +155,7 @@ endif()
 
 if(MSVC)
   target_compile_options(obs-websocket PRIVATE /wd4267 /wd4996)
+  target_link_options(obs-websocket PRIVATE "LINKER:/IGNORE:4099")
 else()
   target_compile_options(
     obs-websocket