Fixed #2306 (False positive: array of std::string is reported as uninitialized)

lib/checkuninitvar.cpp

@@ -435,6 +435,7 @@ private:
 
             // Variable declaration for array..
             if (Token::Match(vartok, "%type% %var% [") &&
+                vartok->isStandardType() &&
                 Token::simpleMatch(vartok->tokAt(2)->link(), "] ;"))
             {
                 vartok = vartok->next();

test/testuninitvar.cpp

@@ -946,6 +946,13 @@ private:
                        "        int b = a[0];\n"
                        "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        checkUninitVar("void foo()\n"
+                       "{\n"
+                       "        Fred a[2];\n"
+                       "        Fred b = a[0];\n"
+                       "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     // alloc..