If a non-gz manual is read after a gzipped manual, refrain

from throwing a bogus error "wait: No child processes".
As reported by Baptiste Daroussin <bapt at FreeBSD dot org>,
clearing the state variable curp->child after use was forgotten.

1 files changed, 1 insertions, 0 deletions

diff --git a/read.c b/read.c
index 75c3b55a..7dabc2e4 100644
--- a/read.c
+++ b/read.c
@@ -868,6 +868,7 @@ mparse_wait(struct mparse *curp)
 		perror("wait");
 		exit((int)MANDOCLEVEL_SYSERR);
 	}
+	curp->child = 0;
 	if (WIFSIGNALED(status)) {
 		mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,
 		    "gunzip died from signal %d", WTERMSIG(status));