Fixing shake camera (#6744)

Fixes #6741

code/modules/mob/mob_helpers.dm

@@ -426,7 +426,7 @@ It's fairly easy to fix if dealing with single letters but not so much with comp
 
 		var/x
 		for(x=0; x<duration, x++)
-			if(M.client)
+			if(!M.client)
 				return
 			if(aiEyeFlag)
 				M.client.eye = locate(dd_range(1,oldeye.loc.x+rand(-strength,strength),world.maxx),dd_range(1,oldeye.loc.y+rand(-strength,strength),world.maxy),oldeye.loc.z)
@@ -438,7 +438,7 @@ It's fairly easy to fix if dealing with single letters but not so much with comp
 		//Will make the strength falloff after the duration.
 		//This helps to reduce jarring effects of major screenshaking suddenly returning to stability
 		//Recommended taper values are 0.05-0.1
-		if(M.client)
+		if(!M.client)
 			return
 		if (taper > 0)
 			while (strength > 0)

html/changelogs/Sindorman-camera.yml

@@ -0,0 +1,41 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes: 
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.  
+author: PoZe
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes: 
+  - bugfix: "Shake camera now works."