maint: src/*.[ch]: convert more `...' to '...'

Run this (twice):
  git grep -E -l '`.+'\' src/*.[ch] \
    |xargs perl -pi -e 's/`(.+?'\'')/'\''$1/'

1 files changed, 3 insertions, 3 deletions

diff --git a/src/ls.h b/src/ls.h
index 028271f57..b35821197 100644
--- a/src/ls.h
+++ b/src/ls.h
@@ -1,10 +1,10 @@
-/* This is for the `ls' program.  */
+/* This is for the 'ls' program.  */
 #define LS_LS 1
 
-/* This is for the `dir' program.  */
+/* This is for the 'dir' program.  */
 #define LS_MULTI_COL 2
 
-/* This is for the `vdir' program.  */
+/* This is for the 'vdir' program.  */
 #define LS_LONG_FORMAT 3
 
 extern int ls_mode;