Add missing end-of-file lines

Author: steffenlarsen

sycl/test/extensions/properties/properties_is_property_key.cpp

@@ -88,4 +88,4 @@ int main() {
                                                            sycl::queue>::value);
 
   return 0;
-}
+}

sycl/test/extensions/properties/properties_is_property_value.cpp

@@ -87,4 +87,4 @@ int main() {
                 NotAPropertyKey, sycl::queue>::value);
 
   return 0;
-}
+}