Add a test that shows that reporting a leak after failure to free is
tricky.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167814 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/malloc.mm b/test/Analysis/malloc.mm
index 34b3c33..99d1de8 100644
--- a/test/Analysis/malloc.mm
+++ b/test/Analysis/malloc.mm
@@ -245,9 +245,12 @@
   if (!string) {free(characters);}
 }
 
-void test12365078_false_negative_no_malloc(unichar *characters) {
+NSString *test12365078_no_malloc_returnValue(unichar *characters) {
   NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
-  if (!string) {;}
+  if (!string) {
+    return 0; // no-warning
+  }
+  return string;
 }
 
 void test12365078_nocheck_nomalloc(unichar *characters) {