Retype from unsigned to CallingConv::ID accordingly. Approved by Bob Wilson.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80773 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLParser.h b/lib/AsmParser/LLParser.h
index 4bdbbfe..545be46 100644
--- a/lib/AsmParser/LLParser.h
+++ b/lib/AsmParser/LLParser.h
@@ -126,7 +126,7 @@
       bool HasLinkage; return ParseOptionalLinkage(Linkage, HasLinkage);
     }
     bool ParseOptionalVisibility(unsigned &Visibility);
-    bool ParseOptionalCallingConv(unsigned &CC);
+    bool ParseOptionalCallingConv(CallingConv::ID &CC);
     bool ParseOptionalAlignment(unsigned &Alignment);
     bool ParseOptionalCommaAlignment(unsigned &Alignment);
     bool ParseIndexList(SmallVectorImpl<unsigned> &Indices);