tests: sync tests/init.sh from gnulib

* tests/init.sh: Update from gnulib.

tests/init.sh

@@ -240,9 +240,11 @@ find_exe_basenames_()
   feb_result_=
   feb_sp_=
   for feb_file_ in $feb_dir_/*.exe; do
-    if test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_"; then
-      return 0
-    fi
+    # If there was no *.exe file, or there existed a file named "*.exe" that
+    # was deleted between the above glob expansion and the existence test
+    # below, just skip it.
+    test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_" \
+      && continue
     case $feb_file_ in
       *[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;;
       *) # Remove leading file name components as well as the .exe suffix.
@@ -260,7 +262,7 @@ find_exe_basenames_()
 # For each file name of the form PROG.exe, create an alias named
 # PROG that simply invokes PROG.exe, then return 0.  If any selected
 # file name or the directory name, $1, contains an unexpected character,
-# define no function and return 1.
+# define no alias and return 1.
 create_exe_shims_()
 {
   case $EXEEXT in