change function style, matching rest of code

Author: jub3i

src/xdisplay.c

@@ -48,7 +48,8 @@ char *getXDisplay(void)
 	return displayName;
 }
 
-void setXDisplay(char *name) {
+void setXDisplay(char *name)
+{
 	displayName = strdup(name);
 	hasDisplayNameChanged = 1;
 }