Fix building showmap against musl
Fix building showmap against musl libc by including the standard
signal.h instead of sys/signal.h.
Bug: 190084016
Test: m USE_HOST_MUSL=true host-native
Change-Id: I6a9b891eb262a8a93444fea98ad74137df2a9f53
diff --git a/tools/showmap.cpp b/tools/showmap.cpp
index 36739b1..452e895 100644
--- a/tools/showmap.cpp
+++ b/tools/showmap.cpp
@@ -16,10 +16,10 @@
#include <getopt.h>
#include <inttypes.h>
+#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
-#include <sys/signal.h>
#include <sys/types.h>
#include <unistd.h>
