[analyzer] Fixup r258572 Utility to match function calls.

Initialize the IdentifierInfo pointer. Hope this fixes the buildbot breakage.

llvm-svn: 258591

clang/include/clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h

@@ -67,7 +67,7 @@ public:
   /// call. Omit this parameter to match every occurance of call with a given
   /// name regardless the number of arguments.
   CallDescription(StringRef FuncName, unsigned RequiredArgs = NoArgRequirement)
-      : FuncName(FuncName), RequiredArgs(RequiredArgs) {}
+      : II(nullptr), FuncName(FuncName), RequiredArgs(RequiredArgs) {}
 };
 
 template<typename T = CallEvent>