Fix rlc_am_data_test to avoid compiler warning from memset

lib/test/upper/rlc_am_data_test.cc

@@ -51,7 +51,8 @@ uint32_t PDU4_LEN = 5;
 
 using namespace srslte;
 
-int main(int argc, char **argv) {
+void test1()
+{
   srslte::rlc_amd_pdu_header_t h;
   srslte::byte_buffer_t        b1, b2;
 
@@ -70,10 +71,12 @@ int main(int argc, char **argv) {
   assert(b2.N_bytes == PDU1_LEN);
   for (uint32_t i = 0; i < b2.N_bytes; i++)
     assert(b2.msg[i] == b1.msg[i]);
+}
 
-  b1.reset();
+void test2()
-  b2.reset();
+{
-  memset(&h, 0, sizeof(srslte::rlc_amd_pdu_header_t));
+  srslte::rlc_amd_pdu_header_t h;
+  srslte::byte_buffer_t        b1, b2;
 
   memcpy(b1.msg, &pdu2[0], PDU2_LEN);
   b1.N_bytes = PDU2_LEN;
@@ -92,10 +95,12 @@ int main(int argc, char **argv) {
   assert(b2.N_bytes == PDU2_LEN);
   for (uint32_t i = 0; i < b2.N_bytes; i++)
     assert(b2.msg[i] == b1.msg[i]);
+}
 
-  b1.reset();
+void test3()
-  b2.reset();
+{
-  memset(&h, 0, sizeof(srslte::rlc_amd_pdu_header_t));
+  srslte::rlc_amd_pdu_header_t h;
+  srslte::byte_buffer_t        b1, b2;
 
   memcpy(b1.msg, &pdu3[0], PDU3_LEN);
   b1.N_bytes = PDU3_LEN;
@@ -115,10 +120,12 @@ int main(int argc, char **argv) {
   assert(b2.N_bytes == PDU3_LEN);
   for (uint32_t i = 0; i < b2.N_bytes; i++)
     assert(b2.msg[i] == b1.msg[i]);
+}
 
-  b1.reset();
+void test4()
-  b2.reset();
+{
-  memset(&h, 0, sizeof(srslte::rlc_amd_pdu_header_t));
+  srslte::rlc_amd_pdu_header_t h;
+  srslte::byte_buffer_t        b1, b2;
 
   memcpy(b1.msg, &pdu4[0], PDU4_LEN);
   b1.N_bytes = PDU4_LEN;
@@ -138,3 +145,10 @@ int main(int argc, char **argv) {
   for (uint32_t i = 0; i < b2.N_bytes; i++)
     assert(b2.msg[i] == b1.msg[i]);
 }
+
+int main(int argc, char **argv) {
+  test1();
+  test2();
+  test3();
+  test4();
+}