Get rid of warnings when compiled with -Wformat-security

Change-Id: I2bfc6582a8198b22af08e4b8d58f532dc138cc02
diff --git a/logwrapper/logwrapper.c b/logwrapper/logwrapper.c
index 6466795..bdf53e8 100644
--- a/logwrapper/logwrapper.c
+++ b/logwrapper/logwrapper.c
@@ -27,8 +27,8 @@
 #include "cutils/log.h"
 
 void fatal(const char *msg) {
-    fprintf(stderr, msg);
-    LOG(LOG_ERROR, "logwrapper", msg);
+    fprintf(stderr, "%s", msg);
+    LOG(LOG_ERROR, "logwrapper", "%s", msg);
     exit(-1);
 }