__uc_malloc: remove stray semicolons

libc/stdlib/__uc_malloc.c

@@ -22,9 +22,9 @@ Cambridge, MA 02139, USA.
 #include <unistd.h>
 #include <malloc.h>
 
-libc_hidden_proto(_exit);
-libc_hidden_proto(__uc_malloc);
-libc_hidden_proto(__uc_malloc_failed);
+libc_hidden_proto(_exit)
+libc_hidden_proto(__uc_malloc)
+libc_hidden_proto(__uc_malloc_failed)
 
 void (*__uc_malloc_failed)(size_t size) = NULL;
 /* Seemingly superfluous assigment of NULL above prevents gas error