[git commit] ash: protect WIFSTOPPED use with #if JOBS

[Denys Vlasenko]

commit: https://git.busybox.net/busybox/commit/?id=9d4dc84a769e3e45e420fbef7c7bb2acbbdccd8e
branch: https://git.busybox.net/busybox/commit/?id=refs/heads/master

This change fixes the build in setups where there are
no headers defining WIFSTOPPED and WSTOPSIG (where JOBS has to be
set to 0).

This partially reverts 4700fb5be (ash: make dowait() a bit more
readable. Logic is unchanged, 2015-10-09).

Signed-off-by: Johannes Schindelin <johannes.schindelin at gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 shell/ash.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/shell/ash.c b/shell/ash.c
index 8c2098d..b0c7dac 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -4022,15 +4022,19 @@ sprint_status48(char *s, int status, int sigonly)
 
 	col = 0;
 	if (!WIFEXITED(status)) {
-		if (JOBS && WIFSTOPPED(status))
+#if JOBS
+		if (WIFSTOPPED(status))
 			st = WSTOPSIG(status);
 		else
+#endif
 			st = WTERMSIG(status);
 		if (sigonly) {
 			if (st == SIGINT || st == SIGPIPE)
 				goto out;
-			if (JOBS && WIFSTOPPED(status))
+#if JOBS
+			if (WIFSTOPPED(status))
 				goto out;
+#endif
 		}
 		st &= 0x7f;
 //TODO: use bbox's get_signame? strsignal adds ~600 bytes to text+rodata
@@ -4182,8 +4186,10 @@ dowait(int block, struct job *job)
 		goto out;
 	}
 	/* The process wasn't found in job list */
-	if (JOBS && !WIFSTOPPED(status))
+#if JOBS
+	if (!WIFSTOPPED(status))
 		jobless--;
+#endif
  out:
 	INT_ON;