Fix printf of possibly uninitialized variable in chest_test_dl.c.

lib/src/phy/ch_estimation/test/chest_test_dl.c

@@ -83,6 +83,7 @@ int main(int argc, char **argv) {
   int               ret = -1;
   int               max_cid;
   FILE*             fmatlab = NULL;
+  uint32_t          cid     = 0;
 
   parse_args(argc,argv);
 
@@ -117,7 +118,6 @@ int main(int argc, char **argv) {
     goto do_exit;
   }
 
-  uint32_t cid = 0;
   if (cell.id == 1000) {
     cid     = 0;
     max_cid = 504;
@@ -228,8 +228,6 @@ int main(int argc, char **argv) {
     INFO("cid=%d\n", cid);
   }
   srslte_chest_dl_free(&est);
-
-
   ret = 0;
 
 do_exit: