Abort if malloc() was unsuccessful. (Closes: redis#747)

async.c

@@ -58,6 +58,8 @@ static unsigned int callbackHash(const void *key) {
 static void *callbackValDup(void *privdata, const void *src) {
     ((void) privdata);
     redisCallback *dup = malloc(sizeof(*dup));
+    if (dup == NULL)
+        abort();
     memcpy(dup,src,sizeof(*dup));
     return dup;
 }

dict.c

@@ -72,6 +72,8 @@ static void _dictReset(dict *ht) {
 /* Create a new hash table */
 static dict *dictCreate(dictType *type, void *privDataPtr) {
     dict *ht = malloc(sizeof(*ht));
+    if (ht == NULL)
+        abort();
     _dictInit(ht,type,privDataPtr);
     return ht;
 }
@@ -143,6 +145,8 @@ static int dictAdd(dict *ht, void *key, void *val) {
 
     /* Allocates the memory and stores key */
     entry = malloc(sizeof(*entry));
+    if (entry == NULL)
+        abort();
     entry->next = ht->table[index];
     ht->table[index] = entry;
 
@@ -257,7 +261,8 @@ static dictEntry *dictFind(dict *ht, const void *key) {
 
 static dictIterator *dictGetIterator(dict *ht) {
     dictIterator *iter = malloc(sizeof(*iter));
-
+    if (iter == NULL)
+        abort();
     iter->ht = ht;
     iter->index = -1;
     iter->entry = NULL;