-Fixed Issue 849

-Fixed some other occurrences of this happening. If you find any, please post it here: http://nanotrasen.com/phpBB3/viewtopic.php?f=7&t=9955 
or let me know in #coderbus.

-Split up the Core() verb a bit.
-When sending messages to Centcom or the Syndicate, with the communications console, it would never reset itself since it resets the wrong variable. I've given it the correct variable and I made the cooldown 10 minutes instead of a minute.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4629 316c924e-a436-60f5-8080-3fe189b3f50e

code/defines/procs/gamehelpers.dm

@@ -166,6 +166,10 @@
 
 	var/turf/T = get_turf(source)
 	var/list/hear = list()
+
+	if(!T)
+		return hear
+
 	var/list/range = hear(R, T)
 
 	for(var/atom/A in range)

code/defines/procs/helper_text.dm

@@ -71,6 +71,10 @@
 			else			non_whitespace = 1
 	if(non_whitespace)		return text		//only accepts the text if it has some non-spaces
 
+// Used to get a sanitized input.
+/proc/stripped_input(var/mob/user, var/message = "", var/title = "", var/default = "", var/max_length=MAX_MESSAGE_LEN)
+	var/name = input(user, message, title, default)
+	return strip_html_simple(name, max_length)
 
 //Filters out undesirable characters from names
 /proc/reject_bad_name(var/t_in, var/allow_numbers=0, var/max_length=MAX_NAME_LEN)