cellular: BC95 memory leak fix

Author: Teemu Kultala

UNITTESTS/features/cellular/framework/AT/at_cellularnetwork/at_cellularnetworktest.cpp

@@ -122,13 +122,15 @@ TEST_F(TestAT_CellularNetwork, test_AT_CellularNetwork_get_registration_params)
     EXPECT_TRUE(reg_params._status == CellularNetwork::RegistrationDenied);
     EXPECT_TRUE(reg_params._act == CellularNetwork::RAT_EGPRS);
     EXPECT_TRUE(reg_params._cell_id == -1);
+    EXPECT_TRUE(reg_params._lac == -1);
 
     ATHandler_stub::read_string_index = 4;
     ATHandler_stub::read_string_table[3] = "00C3";
     ATHandler_stub::read_string_table[2] = "1234FFC1";//==  cellid and in dec: 305463233
     ATHandler_stub::read_string_table[1] = "00100100";
     ATHandler_stub::read_string_table[0] = "01000111";
     EXPECT_TRUE(NSAPI_ERROR_OK == cn.get_registration_params(CellularNetwork::C_EREG, reg_params));
+    EXPECT_TRUE(reg_params._lac == 0xc3);
     EXPECT_TRUE(reg_params._cell_id == 305463233);
     EXPECT_TRUE(reg_params._active_time == 240);
     EXPECT_TRUE(reg_params._periodic_tau == 70 * 60 * 60);

features/cellular/framework/AT/AT_CellularNetwork.cpp

@@ -177,6 +177,7 @@ void AT_CellularNetwork::read_reg_params_and_compare(RegistrationType type)
         }
         if (reg_params._cell_id != -1 && reg_params._cell_id != _reg_params._cell_id) {
             _reg_params._cell_id = reg_params._cell_id;
+            _reg_params._lac = reg_params._lac;
             data.status_data = reg_params._cell_id;
             _connection_status_cb((nsapi_event_t)CellularCellIDChanged, (intptr_t)&data);
         }

features/cellular/framework/targets/QUECTEL/BC95/QUECTEL_BC95_CellularStack.cpp

@@ -190,7 +190,7 @@ nsapi_size_or_error_t QUECTEL_BC95_CellularStack::socket_sendto_impl(CellularSoc
         _at.write_int(socket->id);
         _at.write_int(size);
     } else {
-        delete hexstr;
+        delete [] hexstr;
         return NSAPI_ERROR_PARAMETER;
     }
 
@@ -202,7 +202,7 @@ nsapi_size_or_error_t QUECTEL_BC95_CellularStack::socket_sendto_impl(CellularSoc
     sent_len = _at.read_int();
     _at.resp_stop();
 
-    delete hexstr;
+    delete [] hexstr;
 
     if (_at.get_last_error() == NSAPI_ERROR_OK) {
         return sent_len;