Squashed 'external/toxcore/c-toxcore/' changes from 6d634674a9..73d9b845a3

73d9b845a3 cleanup: Remove old type-ordered event getters.
b0840cc02d feat: add ngc events
7df9a51349 refactor: Make event dispatch ordered by receive time.
bcb6592af5 test: Add C++ classes wrapping system interfaces.
4cea4f9ca4 fix: Make all the fuzzers work again, and add a test for protodump.
c4e209ea1d refactor: Factor out malloc+memcpy into memdup.
87bcc4322d fix: Remove fatal error for non-erroneous case
REVERT: 6d634674a9 cleanup: Remove old type-ordered event getters.
REVERT: d1d48d1dfc feat: add ngc events
REVERT: 994ffecc6b refactor: Make event dispatch ordered by receive time.

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 73d9b845a310c3f56d2d6d77ed56b93d84256d6e

toxcore/util.c

@@ -13,6 +13,7 @@
 
 #include "util.h"
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "ccompat.h"
@@ -80,6 +81,21 @@ bool memeq(const uint8_t *a, size_t a_size, const uint8_t *b, size_t b_size)
     return a_size == b_size && memcmp(a, b, a_size) == 0;
 }
 
+uint8_t *memdup(const uint8_t *data, size_t data_size)
+{
+    if (data == nullptr || data_size == 0) {
+        return nullptr;
+    }
+
+    uint8_t *copy = (uint8_t *)malloc(data_size);
+
+    if (copy != nullptr) {
+        memcpy(copy, data, data_size);
+    }
+
+    return copy;
+}
+
 int16_t max_s16(int16_t a, int16_t b)
 {
     return a > b ? a : b;