Style inquistion for util and some tools.

util/concat.c

@@ -1,5 +1,6 @@
 /* See LICENSE file for copyright and license details. */
 #include <stdio.h>
+
 #include "../text.h"
 #include "../util.h"
 
@@ -9,9 +10,12 @@ concat(FILE *fp1, const char *s1, FILE *fp2, const char *s2)
 	char buf[BUFSIZ];
 	size_t n;
 
-	while((n = fread(buf, 1, sizeof buf, fp1)) > 0)
+	while((n = fread(buf, 1, sizeof buf, fp1)) > 0) {
 		if(fwrite(buf, 1, n, fp2) != n)
 			eprintf("%s: write error:", s2);
+	}
+
 	if(ferror(fp1))
 		eprintf("%s: read error:", s1);
 }
+