AST/CommentSema.cpp: Fix signess in abs() to appease msvc. It would not make sense to pass (unsigned)-(unsigned) to abs().

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160097 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/AST/CommentSema.cpp b/lib/AST/CommentSema.cpp
index 72b0af3436..ae13fa285a 100644
--- a/lib/AST/CommentSema.cpp
+++ b/lib/AST/CommentSema.cpp
@@ -390,7 +390,8 @@ unsigned Sema::correctTypoInParmVarReference(
     const IdentifierInfo *II = ParamVars[i]->getIdentifier();
     if (II) {
       StringRef Name = II->getName();
-      unsigned MinPossibleEditDistance = abs(Name.size() - Typo.size());
+      unsigned MinPossibleEditDistance =
+        abs((int)Name.size() - (int)Typo.size());
       if (MinPossibleEditDistance > 0 &&
           Typo.size() / MinPossibleEditDistance < 3)
         continue;