libdpkg: Rename sigaction variables in subproc module to sa and sa_save

lib/dpkg/subproc.c

@@ -36,21 +36,22 @@
 #include <dpkg/subproc.h>
 
 static int catch_signals[] = { SIGQUIT, SIGINT };
-static struct sigaction uncatch_signals[array_count(catch_signals)];
+static struct sigaction sa_save[array_count(catch_signals)];
 
 void
 subproc_signals_setup(const char *name)
 {
+	struct sigaction sa;
 	size_t i;
-	struct sigaction catchsig;
 
 	onerr_abort++;
-	memset(&catchsig, 0, sizeof(catchsig));
-	catchsig.sa_handler = SIG_IGN;
-	sigemptyset(&catchsig.sa_mask);
-	catchsig.sa_flags = 0;
+	memset(&sa, 0, sizeof(sa));
+	sigemptyset(&sa.sa_mask);
+	sa.sa_handler = SIG_IGN;
+	sa.sa_flags = 0;
+
 	for (i = 0; i < array_count(catch_signals); i++)
-		if (sigaction(catch_signals[i], &catchsig, &uncatch_signals[i]))
+		if (sigaction(catch_signals[i], &sa, &sa_save[i]))
 			ohshite(_("unable to ignore signal %s before running %.250s"),
 			        strsignal(catch_signals[i]), name);
 	push_cleanup(subproc_signals_cleanup, ~0, NULL, 0, 0);
@@ -63,7 +64,7 @@ subproc_signals_cleanup(int argc, void **argv)
 	size_t i;
 
 	for (i = 0; i < array_count(catch_signals); i++) {
-		if (sigaction(catch_signals[i], &uncatch_signals[i], NULL)) {
+		if (sigaction(catch_signals[i], &sa_save[i], NULL)) {
 			fprintf(stderr, _("error un-catching signal %s: %s\n"),
 			        strsignal(catch_signals[i]), strerror(errno));
 			onerr_abort++;