Teach RetainCountChecker that it doesn't quite understand pthread_setspecific and it should just give up when it sees it.  Fixes <rdar://problem/11282706>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155613 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp b/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
index b569e41..f701279 100644
--- a/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
@@ -929,9 +929,9 @@
     //  filters.
     assert(ScratchArgs.isEmpty());
 
-    if (FName == "pthread_create") {
-      // Part of: <rdar://problem/7299394>.  This will be addressed
-      // better with IPA.
+    if (FName == "pthread_create" || FName == "pthread_setspecific") {
+      // Part of: <rdar://problem/7299394> and <rdar://problem/11282706>.
+      // This will be addressed better with IPA.
       S = getPersistentStopSummary();
     } else if (FName == "NSMakeCollectable") {
       // Handle: id NSMakeCollectable(CFTypeRef)