[analyzer] Fix a buildbot crash triggered by turning on dynamic
dispatch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164579 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp b/lib/StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp
index 1078cd3..48dd415 100644
--- a/lib/StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp
+++ b/lib/StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp
@@ -763,7 +763,7 @@
     // since 'nil' is rarely returned in practice, we should not warn when the
     // caller to the defensive constructor uses the object in contexts where
     // 'nil' is not accepted.
-    if (C.isWithinInlined() &&
+    if (C.isWithinInlined() && M.getDecl() &&
         M.getDecl()->getMethodFamily() == OMF_init &&
         M.isReceiverSelfOrSuper()) {
       State = assumeExprIsNonNull(M.getOriginExpr(), State, C);