Stop saving lock positions to stack variables.

src/prrt/socket.c

@@ -111,19 +111,17 @@ int PrrtSocket_send(PrrtSocket *sock_ptr, const uint8_t *data, const size_t data
 
 int32_t PrrtSocket_recv(PrrtSocket *sock_ptr, void *buf_ptr) {
     check(sock_ptr->is_sender == false, "Cannot receive on sender socket.")
-    pthread_mutex_t filledMutex = sock_ptr->inQueueFilledMutex;
-    pthread_mutex_t closingMutex = sock_ptr->closingMutex;
     while (1) {
-        check(pthread_mutex_lock(&filledMutex) == 0, "Lock failed.");
+        check(pthread_mutex_lock(&sock_ptr->inQueueFilledMutex) == 0, "Lock failed.");
         while (List_count(sock_ptr->inQueue) == 0) {
-            check(pthread_mutex_lock(&closingMutex) == 0, "Lock failed.");
+            check(pthread_mutex_lock(&sock_ptr->closingMutex) == 0, "Lock failed.");
             if (sock_ptr->closing) {
-                check(pthread_mutex_unlock(&closingMutex) == 0, "Unlock failed.");
-                check(pthread_mutex_unlock(&filledMutex) == 0, "Unlock failed.");
+                check(pthread_mutex_unlock(&sock_ptr->closingMutex) == 0, "Unlock failed.");
+                check(pthread_mutex_unlock(&sock_ptr->inQueueFilledMutex) == 0, "Unlock failed.");
                 return -1;
             }
-            check(pthread_mutex_unlock(&closingMutex) == 0, "Unlock failed.");
-            check(pthread_cond_wait(&sock_ptr->inQueueFilledCv, &filledMutex) == 0, "Wait failed.");
+            check(pthread_mutex_unlock(&sock_ptr->closingMutex) == 0, "Unlock failed.");
+            check(pthread_cond_wait(&sock_ptr->inQueueFilledCv, &sock_ptr->inQueueFilledMutex) == 0, "Wait failed.");
         }
         PrrtPacket *packet = List_shift(sock_ptr->inQueue);
 
@@ -131,7 +129,7 @@ int32_t PrrtSocket_recv(PrrtSocket *sock_ptr, void *buf_ptr) {
         PrrtPacket_copy_payload_to_buffer(buf_ptr, packet, PRRT_PACKET_DATA_HEADER_SIZE);
         PrrtPacket_destroy(packet);
 
-        check(pthread_mutex_unlock(&filledMutex) == 0, "Unlock failed.");
+        check(pthread_mutex_unlock(&sock_ptr->inQueueFilledMutex) == 0, "Unlock failed.");
         return len;
     }
     error: