Hashtable: code formatting

Co-authored-by: BenBE <BenBE@geshi.org>

Author: charlievieth

Hashtable.c

@@ -173,9 +173,7 @@ static inline bool Hashtable_shouldResize(const Hashtable* this) {
 
 Hashtable* Hashtable_new(size_t size, bool owner) {
    assert(MIN_TABLE_SIZE == primes[0]);
-   Hashtable* this;
-
-   this = xMalloc(sizeof(Hashtable));
+   Hashtable* this = xMalloc(sizeof(Hashtable));
    this->size = nextPrime(size);
    this->items = 0;
    this->buckets = (HashtableItem*) xCalloc(this->size, sizeof(HashtableItem));