memleak: free FFT plan upon pss_synch_free

srslte/lib/sync/pss.c

@@ -203,6 +203,8 @@ void srslte_pss_synch_free(srslte_pss_synch_t *q) {
       free(q->conv_output_avg);
     }
     
+    srslte_dft_plan_free(&q->dftp_input);
+
     bzero(q, sizeof(srslte_pss_synch_t));    
   }
 }