rrc,sync: fix two uninit vars

detected by Valgrind when running UE with TDD cell

lib/src/phy/sync/sync.c

@@ -745,7 +745,7 @@ srslte_sync_find(srslte_sync_t* q, const cf_t* input, uint32_t find_offset, uint
           int                 sss_idx;
           uint32_t            nof_frame_type_trials;
           srslte_frame_type_t frame_type_trials[2];
-          float               sss_corr[2];
+          float               sss_corr[2] = {};
           uint32_t            sf_idx[2], N_id_1[2];
 
           if (q->detect_frame_type) {

srsue/src/stack/rrc/rrc.cc

@@ -1185,7 +1185,7 @@ void rrc::handle_sib1()
 
   // Set TDD Config
   if (sib1->tdd_cfg_present) {
-    srslte_tdd_config_t tdd_config;
+    srslte_tdd_config_t tdd_config = {};
     tdd_config.sf_config = sib1->tdd_cfg.sf_assign.to_number();
     tdd_config.ss_config = sib1->tdd_cfg.special_sf_patterns.to_number();
     phy->set_config_tdd(tdd_config);