Merge pull request #779 from yegorich/memleaks

Fix memory leaks

In jtag3_send() and jtagmkI_send(), free the buffer when returning an error.

src/jtag3.c

@@ -430,6 +430,7 @@ int jtag3_send(PROGRAMMER * pgm, unsigned char * data, size_t len)
   if (serial_send(&pgm->fd, buf, len + 4) != 0) {
     avrdude_message(MSG_INFO, "%s: jtag3_send(): failed to send command to serial port\n",
                     progname);
+    free(buf);
     return -1;
   }
 

src/jtagmkI.c

@@ -214,6 +214,7 @@ static int jtagmkI_send(PROGRAMMER * pgm, unsigned char * data, size_t len)
   if (serial_send(&pgm->fd, buf, len + 2) != 0) {
     avrdude_message(MSG_INFO, "%s: jtagmkI_send(): failed to send command to serial port\n",
                     progname);
+    free(buf);
     return -1;
   }