Initialize encoding pop-up (Preferences)

Previously this would always show UTF-8 and cause an existing setting to be overwritten (with UTF-8) when bringing up the preferences window.

Frameworks/Preferences/src/FilesPreferences.mm

@@ -63,6 +63,7 @@
 		}
 	}
 
+	encodingPopUp.encoding = [self valueForKey:@"encoding"];
 	[self bind:@"encoding" toObject:encodingPopUp withKeyPath:@"encoding" options:nil];
 }
 @end