Avoid C99 comments, use old-style C comments instead.

This doesn't make the code uglier or harder to read, yet it makes the
code more portable.  This also simplifies checking for other potential
incompatibilities.  "gcc -std=c89 -pedantic" can flag many incompatible
constructs as warnings, but C99 comments will cause it to emit an error.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/builtin-apply.c b/builtin-apply.c
index 1e5b846..c903146 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -14,14 +14,15 @@
 #include "delta.h"
 #include "builtin.h"
 
-//  --check turns on checking that the working tree matches the
-//    files that are being modified, but doesn't apply the patch
-//  --stat does just a diffstat, and doesn't actually apply
-//  --numstat does numeric diffstat, and doesn't actually apply
-//  --index-info shows the old and new index info for paths if available.
-//  --index updates the cache as well.
-//  --cached updates only the cache without ever touching the working tree.
-//
+/*
+ *  --check turns on checking that the working tree matches the
+ *    files that are being modified, but doesn't apply the patch
+ *  --stat does just a diffstat, and doesn't actually apply
+ *  --numstat does numeric diffstat, and doesn't actually apply
+ *  --index-info shows the old and new index info for paths if available.
+ *  --index updates the cache as well.
+ *  --cached updates only the cache without ever touching the working tree.
+ */
 static const char *prefix;
 static int prefix_length = -1;
 static int newfd = -1;
@@ -284,8 +285,8 @@
 {
 	char *name;
 
-	first += 4;	// skip "--- "
-	second += 4;	// skip "+++ "
+	first += 4;	/* skip "--- " */
+	second += 4;	/* skip "+++ " */
 	if (is_dev_null(first)) {
 		patch->is_new = 1;
 		patch->is_delete = 0;