Clean up a number of obsolete autoconf-detected standard C things.
svn path=/trunk/yasm/; revision=1892
diff --git a/libyasm/mergesort.c b/libyasm/mergesort.c
index 82fe52a..bde5242 100644
--- a/libyasm/mergesort.c
+++ b/libyasm/mergesort.c
@@ -58,10 +58,8 @@
* (The default is pairwise merging.)
*/
-#ifdef STDC_HEADERS
-# include <errno.h>
-# include <string.h>
-#endif
+#include <errno.h>
+#include <string.h>
static void setup(unsigned char *, unsigned char *, size_t, size_t,
int (*)(const void *, const void *));