patch 8.2.0943: displaying ^M or ^J depends on current buffer

Problem:    Displaying ^M or ^J depends on current buffer.
Solution:   Pass the displayed buffer to transchar(). (closes #6225)
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index ac55c26..2280fcf 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -69,7 +69,7 @@
 #endif
 			       ))
 	{
-	    transchar_nonprint(buf3, c);
+	    transchar_nonprint(curbuf, buf3, c);
 	    vim_snprintf(buf1, sizeof(buf1), "  <%s>", (char *)buf3);
 	}
 	else
@@ -2556,7 +2556,7 @@
     }
 
     /*
-     * if the file was changed we may not be allowed to abandon it
+     * If the file was changed we may not be allowed to abandon it:
      * - if we are going to re-edit the same file
      * - or if we are the only window on this file and if ECMD_HIDE is FALSE
      */