[analyzer] Teach CheckObjCDealloc about Block_release().

It now treats Block_release(b) as a release in addition to [b release].

llvm-svn: 262272
diff --git a/clang/test/Analysis/Inputs/system-header-simulator-for-objc-dealloc.h b/clang/test/Analysis/Inputs/system-header-simulator-for-objc-dealloc.h
index 0b9888a..9850aec 100644
--- a/clang/test/Analysis/Inputs/system-header-simulator-for-objc-dealloc.h
+++ b/clang/test/Analysis/Inputs/system-header-simulator-for-objc-dealloc.h
@@ -27,3 +27,6 @@
 @end
 
 typedef struct objc_selector *SEL;
+
+void _Block_release(const void *aBlock);
+#define Block_release(...) _Block_release((const void *)(__VA_ARGS__))