cleanup: Small improvements found by PVS Studio.

Author: iphydf

toxcore/announce.c

@@ -239,9 +239,7 @@ bool announce_store_data(Announcements *announce, const uint8_t *data_public_key
     if (length > 0) {
         assert(data != nullptr);
 
-        if (entry->data != nullptr) {
-            free(entry->data);
-        }
+        free(entry->data);
 
         uint8_t *entry_data = (uint8_t *)malloc(length);
 
@@ -702,9 +700,7 @@ void kill_announcements(Announcements *announce)
     shared_key_cache_free(announce->shared_keys);
 
     for (uint32_t i = 0; i < ANNOUNCE_BUCKETS * ANNOUNCE_BUCKET_SIZE; ++i) {
-        if (announce->entries[i].data != nullptr) {
-            free(announce->entries[i].data);
-        }
+        free(announce->entries[i].data);
     }
 
     free(announce);

toxcore/group_connection.c

@@ -41,9 +41,7 @@ static bool array_entry_is_empty(const GC_Message_Array_Entry *array_entry)
 non_null()
 static void clear_array_entry(GC_Message_Array_Entry *const array_entry)
 {
-    if (array_entry->data != nullptr) {
-        free(array_entry->data);
-    }
+    free(array_entry->data);
 
     *array_entry = (GC_Message_Array_Entry) {
         nullptr

toxcore/group_moderation.c

@@ -864,9 +864,7 @@ uint16_t sanctions_list_replace_sig(Moderation *moderation, const uint8_t *publi
 
 void sanctions_list_cleanup(Moderation *moderation)
 {
-    if (moderation->sanctions != nullptr) {
-        free(moderation->sanctions);
-    }
+    free(moderation->sanctions);
 
     moderation->sanctions = nullptr;
     moderation->num_sanctions = 0;

toxcore/network_test_util.cc

@@ -106,14 +106,11 @@ IP_Port random_ip_port(const Random *rng)
     return ip_port;
 }
 
-bool operator==(Family const &a, Family const &b) { return a.value == b.value; }
+bool operator==(Family a, Family b) { return a.value == b.value; }
 
-bool operator==(IP4 const &a, IP4 const &b) { return a.uint32 == b.uint32; }
+bool operator==(IP4 a, IP4 b) { return a.uint32 == b.uint32; }
 
-bool operator==(IP6 const &a, IP6 const &b)
-{
-    return a.uint64[0] == b.uint64[0] && a.uint64[1] == b.uint64[1];
-}
+bool operator==(IP6 a, IP6 b) { return a.uint64[0] == b.uint64[0] && a.uint64[1] == b.uint64[1]; }
 
 bool operator==(IP const &a, IP const &b)
 {

toxcore/network_test_util.hh

@@ -83,10 +83,10 @@ public:
     IP_Port operator()();
 };
 
-bool operator==(Family const &a, Family const &b);
+bool operator==(Family a, Family b);
 
-bool operator==(IP4 const &a, IP4 const &b);
-bool operator==(IP6 const &a, IP6 const &b);
+bool operator==(IP4 a, IP4 b);
+bool operator==(IP6 a, IP6 b);
 bool operator==(IP const &a, IP const &b);
 bool operator==(IP_Port const &a, IP_Port const &b);