Merge pull request robbiehanson#945 from nixxcode/fix-iq-stanzas-missing-id-attribute

Fix missing "id" attribute in some IQ stanzas

Author: chrisballinger

Core/XMPPIQ.m

@@ -116,6 +116,8 @@ - (id)initWithType:(NSString *)type to:(XMPPJID *)jid elementID:(NSString *)eid
 
 		if (eid)
 			[self addAttributeWithName:@"id" stringValue:eid];
+		else
+			[self addAttributeWithName:@"id" stringValue:[[NSUUID UUID] UUIDString]];
 
 		if (childElement)
 			[self addChild:childElement];

Extensions/Roster/XMPPRoster.m

@@ -515,9 +515,7 @@ - (void)addUser:(XMPPJID *)jid withNickname:(NSString *)optionalName groups:(NSA
 	NSXMLElement *query = [NSXMLElement elementWithName:@"query" xmlns:@"jabber:iq:roster"];
 	[query addChild:item];
 
-	NSXMLElement *iq = [NSXMLElement elementWithName:@"iq"];
-	[iq addAttributeWithName:@"type" stringValue:@"set"];
-	[iq addChild:query];
+	XMPPIQ *iq = [XMPPIQ iqWithType:@"set" child:query];
 
 	[xmppStream sendElement:iq];