accept and ignore -Wconversion

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69914 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/DiagnosticGroups.td

@@ -28,6 +28,7 @@ def : DiagGroup<"cast-qual">;
 def : DiagGroup<"char-align">;
 def : DiagGroup<"char-subscripts">;
 def Comment : DiagGroup<"comment">;
+def : DiagGroup<"conversion">;
 def : DiagGroup<"declaration-after-statement">;
 def : DiagGroup<"format-security">;
 def : DiagGroup<"format=2">;