patch 8.2.4928: various white space and cosmetic mistakes

Problem:    Various white space and cosmetic mistakes.
Solution:   Change spaces to tabs, improve comments.
diff --git a/src/mouse.c b/src/mouse.c
index 005b944..af9186d 100644
--- a/src/mouse.c
+++ b/src/mouse.c
@@ -2284,7 +2284,7 @@
 	//	    ^----- column
 	//	 ^-------- code
 	//
-	// \033[<%d;%d;%dm        : mouse release event
+	// \033[<%d;%d;%dm	  : mouse release event
 	//	       ^-- row
 	//	    ^----- column
 	//	 ^-------- code
@@ -2565,9 +2565,9 @@
 	 * Pe, the event code indicates what event caused this report
 	 *    The following event codes are defined:
 	 *    0 - request, the terminal received an explicit request for a
-	 *        locator report, but the locator is unavailable
+	 *	  locator report, but the locator is unavailable
 	 *    1 - request, the terminal received an explicit request for a
-	 *        locator report
+	 *	  locator report
 	 *    2 - left button down
 	 *    3 - left button up
 	 *    4 - middle button down