[compiler-rt] remove unneeded comma for pthread_atfork declaration (#99739)

Author: devnexen

compiler-rt/lib/asan/asan_interceptors.cpp

@@ -747,7 +747,7 @@ INTERCEPTOR(int, atexit, void (*func)()) {
 extern "C" {
 extern int _pthread_atfork(void (*prepare)(), void (*parent)(),
                            void (*child)());
-};
+}
 
 INTERCEPTOR(int, pthread_atfork, void (*prepare)(), void (*parent)(),
             void (*child)()) {