fix: Initialise array pointers to 0 before performing check on them.

src/package/vieter_package_dynarray.c

@@ -12,12 +12,18 @@ void vieter_package_dynarray_add(vieter_package_dynarray *da, const char *s) {
 	// An empty vieter_package_dynarray does not have an allocated internal array yet
 	if (da->size == 0) {
 		da->array = malloc(sizeof(char*) * da->capacity);
+
+		// Initialise all char*'s to 0 so array[i] == NULL can be used to see if field is empty
+		memset(da->array, 0, sizeof(char*) * da->capacity);
 	}
 	// Double array size if it's full
 	else if (da->size == da->capacity) {
 		// if the realloc fails, access to memory in da->array is lost
 		da->array = realloc(da->array, sizeof(char*) * da->capacity * 2);
 		da->capacity *= 2;
+
+		// Same as the previous memset, but only for newly allocated pointers
+		memset(da->array + da->size, 0, sizeof(char*) * da->capacity / 2);
 	}
 	
 	da->array[da->size] = strdup(s);