Fix crash on TERM signal (unintialized memory)

src/rend-osx.c

@@ -171,16 +171,18 @@ void rend_callback(void *info) {
     }
 
     src=dst=msg.txt;
-    while(src && (*src)) {
+    while(src && (*src) && (src - msg.txt < MAX_TEXT_LEN)) {
         len = (*src);
-        memmove(dst,src+1,len);
-        dst += len;
-        src += len + 1;
-        if(*src) {
-            *dst++ = '\001';
-        } else {
-            *dst='\0';
+        if((src + len + 1) - msg.txt < MAX_TEXT_LEN) {
+            memmove(dst,src+1,len);
+            dst += len;
+            if(*src) {
+                *dst++ = '\001';
+            } else {
+                *dst='\0';
+            }
         }
+        src += len + 1;
     }
 
     switch(msg.cmd) {

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);
 }