Disable a couple more warnings

Summary: One of these warnings is informational, the other we will continue to blissfully ignore until either includes become cheap, or the eventual heat death of the universe, whichever comes first.

Reviewed By: yfeldblum

Differential Revision: D9565514

fbshipit-source-id: e5a8d8c868c122d4b06635b061540c8f329ec93d

CMake/FollyCompilerMSVC.cmake

@@ -218,6 +218,7 @@ function(apply_folly_compile_options_to_target THETARGET)
       /wd4623 # Default constructor was implicitly defined as deleted.
       /wd4625 # Copy constructor was implicitly defined as deleted.
       /wd4626 # Assignment operator was implicitly defined as deleted.
+      /wd4643 # Forward declaring standard library types is not permitted.
       /wd4647 # Behavior change in __is_pod.
       /wd4668 # Macro was not defined, replacing with 0.
       /wd4706 # Assignment within conditional expression.
@@ -228,6 +229,7 @@ function(apply_folly_compile_options_to_target THETARGET)
       /wd5026 # Move constructor was implicitly defined as deleted.
       /wd5027 # Move assignment operator was implicitly defined as deleted.
       /wd5031 # #pragma warning(pop): likely mismatch, popping warning state pushed in different file. This is needed because of how boost does things.
+      /wd5045 # Compiler will insert Spectre mitigation for memory load if /Qspectre switch is specified.
 
       # Warnings to treat as errors:
       /we4099 # Mixed use of struct and class on same type names.