Solving the following compile time error

error: moving ‘a’ of type ‘arduino::String’ to itself [-Werror=self-move]

Author: andreagilardoni

Diff for: test/src/String/test_move.cpp

@@ -37,14 +37,10 @@ TEST_CASE("Testing String move assignment", "[String-move-02]")
 
 TEST_CASE("Testing String move self assignment", "[String-move-03]")
 {
-#if (defined(GCC_VERSION) && GCC_VERSION >= 13) || (defined(__clang_major__) && __clang_major__ >= 14)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wself-move"
-#endif
-    arduino::String a("src");
-    a = std::move(a);
-    REQUIRE(a == "src");
-#if defined(GCC_VERSION) && GCC_VERSION >= 13
-#pragma GCC diagnostic pop
-#endif
+    String b;
+    {
+        arduino::String a("src");
+        b = std::move(a);
+    }
+    REQUIRE(b == "src");
 }