need to include stdlib.h for size_t

[r28226]

include/libfirm/adt/hashptr.h

@@ -26,6 +26,7 @@
 #ifndef FIRM_ADT_HASHPTR_H
 #define FIRM_ADT_HASHPTR_H
 
+#include <stdlib.h>
 #include "../begin.h"
 
 #define _FIRM_FNV_OFFSET_BASIS 2166136261U

ir/tv/fltcalc.h

@@ -27,6 +27,7 @@
 #ifndef FIRM_TV_FLTCALC_H
 #define FIRM_TV_FLTCALC_H
 
+#include <stdlib.h>
 #include "firm_types.h"
 
 #ifdef HAVE_LONG_DOUBLE