Clean up code

Clean up the code, so it compiles with -Wall -Wextra -Werror

Change-Id: I78ad5941a45208e1a82181cedb5853753f58ff0d
diff --git a/src/android.c b/src/android.c
index 3e88959..e74266f 100644
--- a/src/android.c
+++ b/src/android.c
@@ -335,9 +335,7 @@
 				context_t ctx)
 {
 	const char *username = NULL;
-	char *end = NULL;
-	struct passwd *pw;
-	struct seapp_context *cur;
+	struct seapp_context *cur = NULL;
 	int i;
 	size_t n;
 	uid_t userid;