Change \t to real tab in echo argument.
PR: 847
diff --git a/tools/c_issuer b/tools/c_issuer
index 4c69120..55821ab 100644
--- a/tools/c_issuer
+++ b/tools/c_issuer
@@ -6,5 +6,5 @@
 for i in $*
 do
 	n=`openssl x509 -issuer -noout -in $i`
-	echo "$i\t$n"
+	echo "$i	$n"
 done