[PATCH 2/2] [gdb] Handle AWK=gawk in gstack

[Tom de Vries <tdevries@suse.de>]

When running test-case gdb.base/gstack.exp on msys2-ucrt64, I run into:
...
PASS: $exp: spawn gstack
gstack: could not find usable awk interpreter
GSTACK-END
PASS: $exp: gstack exits with no error
PASS: $exp: gstack's exit status is 0
UNSUPPORTED: gdb.base/gstack.exp: no awk interpreter found
...

The failure can be reproducing on the command line:
...
$ AWK=gawk gstack
gstack: could not find usable awk interpreter
...

Fix this in gstack using:
...
AWK=$(command -v "$AWK")
...
---
 gdb/gstack-1.in | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gdb/gstack-1.in b/gdb/gstack-1.in
index 9079e70a746..46fa9429d86 100755
--- a/gdb/gstack-1.in
+++ b/gdb/gstack-1.in
@@ -34,6 +34,8 @@ if [ -z "$AWK" ]; then
 	test -n "$awk_prog" && break
     done
     AWK="$awk_prog"
+else
+    AWK=$(command -v "$AWK")
 fi
 if [ ! -x "$AWK" ]; then
     echo "$0: could not find usable awk interpreter" 1>&2
-- 
2.51.0