Fixed #3038 (False Positive - memory leak)

lib/checkmemoryleak.cpp

@@ -848,6 +848,8 @@ const char * CheckMemoryLeakInFunction::call_func(const Token *tok, std::list<co
                     return ret;
                 }
             }
+            if (varid > 0 && Token::Match(tok, "[(,] %varid% . %var% [,)]", varid))
+                return "use";
         }
     }
     return NULL;

test/testmemleak.cpp

@@ -487,6 +487,7 @@ private:
         ASSERT_EQUALS(";;use;;", getcode("char *s; x = {1,s};", "s"));
         ASSERT_EQUALS(";{};;alloc;;use;", getcode("struct Foo { }; Foo *p; p = malloc(10); const Foo *q; q = p;", "p"));
         ASSERT_EQUALS(";;alloc;use;", getcode("Fred *fred; p.setFred(fred = new Fred);", "fred"));
+        ASSERT_EQUALS(";;use;", getcode("struct AB *ab; f(ab->a);", "ab"));
 
         // non-use..
         ASSERT_EQUALS(";;", getcode("char *s; s = s + 1;", "s"));