Fix crash on TERM signal (unintialized memory)

src/rend-osx.c

@@ -171,17 +171,19 @@ void rend_callback(void *info) {
     }
 
     src=dst=msg.txt;
-    while(src && (*src)) {
+    while(src && (*src) && (src - msg.txt < MAX_TEXT_LEN)) {
         len = (*src);
+        if((src + len + 1) - msg.txt < MAX_TEXT_LEN) {
             memmove(dst,src+1,len);
             dst += len;
-        src += len + 1;
             if(*src) {
                 *dst++ = '\001';
             } else {
                 *dst='\0';
             }
         }
+        src += len + 1;
+    }
 
     switch(msg.cmd) {
     case REND_MSG_TYPE_REGISTER:

src/rend-unix.c

@@ -152,6 +152,7 @@ int rend_running(void) {
 int rend_stop(void) {
     REND_MESSAGE msg;
 
+    memset((void*)&msg,0x0,sizeof(msg));
     msg.cmd=REND_MSG_TYPE_STOP;
     return rend_send_message(&msg);
 }