[Libguestfs] [PATCH nbdkit] sh: Don't need to cast parameter of ascii_is* to (unsigned char).

[Richard W.M. Jones]

Our replacements for these functions are not undefined for negative
values.

Thanks: Eric Blake
Fixes: commit 9f34db74786fdc92b290a7d47e4b003bd84fec69.
---
 plugins/sh/call.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugins/sh/call.c b/plugins/sh/call.c
index b2d4a794..741022b6 100644
--- a/plugins/sh/call.c
+++ b/plugins/sh/call.c
@@ -443,7 +443,7 @@ handle_script_error (const char *argv0, char *ebuf, size_t len)
   }
 
   if (skip && ebuf[skip]) {
-    if (!ascii_isspace ((unsigned char) ebuf[skip])) {
+    if (!ascii_isspace (ebuf[skip])) {
       /* Treat 'EINVALID' as EIO, not EINVAL */
       err = EIO;
       skip = 0;
@@ -451,7 +451,7 @@ handle_script_error (const char *argv0, char *ebuf, size_t len)
     else
       do
         skip++;
-      while (ascii_isspace ((unsigned char) ebuf[skip]));
+      while (ascii_isspace (ebuf[skip]));
   }
 
   while (len > 0 && ebuf[len-1] == '\n')
-- 
2.25.0