Replace spaces in string parsing with non-printable 0x7F for correct passthrough in radio

DSP_API/SmartSDR_Interface/cmd_basics.c

@@ -265,6 +265,7 @@ uint32 cmd_slice(int requester_fd, int argc, char **argv)
         if(strncmp(argv[2], "string", strlen("string")) == 0)
         {
             char* new_string = argv[2]+strlen("string")+1;
+            charReplace(new_string, (char) 0x7F, ' ');
             freedv_set_string(slc, new_string);
             return SUCCESS;
         }