Fix FN constParameterPointer (#5270)

Co-authored-by: chrchr-github <chrchr@github>

lib/astutils.cpp

@@ -2196,7 +2196,7 @@ T* getTokenArgumentFunctionImpl(T* tok, int& argn)
             parent = parent->astParent();
 
         // passing variable to subfunction?
-        if (Token::Match(parent, "[(,{]"))
+        if (Token::Match(parent, "[[(,{]"))
             ;
         else if (Token::simpleMatch(parent, ":")) {
             while (Token::Match(parent, "[?:]"))

test/testother.cpp

@@ -3754,6 +3754,13 @@ private:
               "    p = q;\n"
               "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        check("struct S { int a[1]; };\n"
+              "void f(S* s) {\n"
+              "    if (s->a[0]) {}\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:2]: (style) Parameter 's' can be declared as pointer to const\n",
+                      errout.str());
     }
 
     void switchRedundantAssignmentTest() {