Simplify code. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189168 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index f625afe..4265d5a 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -313,12 +313,7 @@
 static bool hasObjCCategory(StringRef Name) {
   if (!isObjCClass(Name)) return false;
 
-  size_t pos = Name.find(')');
-  if (pos != std::string::npos) {
-    if (Name[pos+1] != ' ') return false;
-    return true;
-  }
-  return false;
+  return Name.find(") ") != StringRef::npos;
 }
 
 static void getObjCClassCategory(StringRef In, StringRef &Class,