openlog could deadlock when called from vsyslog, so

allow recursive locking,
 -Erik

libc/misc/syslog/syslog.c

@@ -82,7 +82,7 @@
 
 #ifdef __UCLIBC_HAS_THREADS__
 #include <pthread.h>
-static pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t mylock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
 # define LOCK	pthread_mutex_lock(&mylock)
 # define UNLOCK	pthread_mutex_unlock(&mylock);
 #else