Fix: return size in read_file

Implementierung/main.c

@@ -24,7 +24,7 @@ void md2_hash(size_t len, const uint8_t buf[len], uint8_t out[16]) {
 
 }
 
-static uint8_t* read_file(const char* path) {
+static uint8_t* read_file(const char* path, size_t* size) {
     // Read the contents of the file specified by path into a heap-allocated
     // buffer and return a pointer to that buffer.
     FILE* f = fopen(path, "r");
@@ -60,6 +60,7 @@ static uint8_t* read_file(const char* path) {
 
     fclose(f);
 
+    (*size) = bytesRead;
     return data;
 }