Fix malloc warning by using stdlib.h

git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@5211 c6295689-39f2-0310-b995-f0e70906c6a9

src/libopensc/card-piv.c

@@ -25,12 +25,10 @@
 #include "config.h"
 
 #include <ctype.h>
+#include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
 #include <limits.h>
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
 #ifdef ENABLE_OPENSSL
 	/* openssl only needed for card administration */
 #include <openssl/evp.h>