tidy up some code that was added a while back.

cJSON.c

@@ -662,19 +662,9 @@ static char *print_object(cJSON *item,int depth,int fmt,printbuffer *p)
 
 /* Get Array size/item / object item. */
 int    cJSON_GetArraySize(cJSON *array)							{cJSON *c=array->child;int i=0;while(c)i++,c=c->next;return i;}
-cJSON *cJSON_GetArrayItem(cJSON *array,int item)				{cJSON *c; if (array == NULL) return NULL; c=array->child;  while (c && item>0) item--,c=c->next; return c;}
-cJSON *cJSON_GetObjectItem(cJSON *object,const char *string)	{cJSON *c; if (object == NULL) return NULL; c=object->child; while (c && cJSON_strcasecmp(c->string,string)) c=c->next; return c;}
-int cJSON_HasObjectItem(cJSON *object,const char *string)	{
-	cJSON *c=object->child;
-	while (c )
-	{
-		if(cJSON_strcasecmp(c->string,string)==0){
-			return 1;
-		}
-	c=c->next;
-	}
-	return 0;
-}
+cJSON *cJSON_GetArrayItem(cJSON *array,int item)				{cJSON *c=array?array->child:0;while (c && item>0) item--,c=c->next; return c;}
+cJSON *cJSON_GetObjectItem(cJSON *object,const char *string)	{cJSON *c=object?object->child:0;while (c && cJSON_strcasecmp(c->string,string)) c=c->next; return c;}
+int cJSON_HasObjectItem(cJSON *object,const char *string)		{return cJSON_GetObjectItem(object,string)?1:0;}
 
 /* Utility for array list handling. */
 static void suffix_object(cJSON *prev,cJSON *item) {prev->next=item;item->prev=prev;}