Remove stray unclosed comment
#if PDIAGNOSTIC_AWARE_CLANG
#pragma clang diagnostic ignored "-Wunused-function"
#elif PDIAGNOSTIC_AWARE_GCC
-#pragma GCC diagnostic ignored "-Wunused-function" */
+#pragma GCC diagnostic ignored "-Wunused-function"
#endif
#endif
#undef PDIAGNOSTIC_IGNORE_UNUSED_FUNCTION
