Fix type mismatch in initialization (caught by -Wliteral-conversion)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138736 91177308-0d34-0410-b5e6-96231b3b80d8

tools/c-index-test/c-index-test.c

@@ -419,7 +419,7 @@ void PrintDiagnostics(CXTranslationUnit TU) {
 }
 
 void PrintMemoryUsage(CXTranslationUnit TU) {
-  unsigned long total = 0.0;
+  unsigned long total = 0;
   unsigned i = 0;
   CXTUResourceUsage usage = clang_getCXTUResourceUsage(TU);
   fprintf(stderr, "Memory usage:\n");