Fix sending of forgot password link to non-root users

https://github.com/webmin/webmin/issues/2826

acl/forgot_form.cgi

@@ -21,10 +21,15 @@ print &ui_form_start("forgot_send.cgi", "post");
 print &ui_hidden("user_acc", $u->{'name'});
 print &ui_table_start($text{'forgot_header'}, undef, 2);
 
-print &ui_table_row($text{'forgot_user'},
-	$u->{'name'} eq "root"
-	  ? &ui_textbox("user", $u->{'name'}, 12)
-	  : "<tt>".$u->{'name'}."</tt>");
+if ($u->{'name'} eq "root") {
+	print &ui_table_row($text{'forgot_sudouser'},
+			    &ui_textbox("user", $u->{'name'}, 12));
+	}
+else {
+	print &ui_table_row($text{'forgot_user'},
+			    "<tt>".$u->{'name'}."</tt>");
+	print &ui_hidden("user", $u->{'name'});
+	}
 
 print &ui_table_row($text{'forgot_email'},
 	&ui_opt_textbox("email", $u->{'email'}, 60,

acl/forgot_send.cgi

@@ -19,6 +19,7 @@ $in{'email_def'} || $in{'email'} =~ /^\S+\@\S+$/ ||
 	&error($text{'forgot_eemail'});
 my $unixuser;
 if ($in{'user'} ne $in{'user_acc'}) {
+	# Find the sudo-capable user whose password is being reset
 	&foreign_require("useradmin");
 	my ($uinfo) = grep { $_->{'user'} eq $in{'user'} }
 			   &useradmin::list_users();

acl/lang/en

@@ -532,5 +532,6 @@ forgot_link=The link below can be used to reset the Webmin password for $1 for t
 forgot_enosudo=Sudo is not available on this system!
 forgot_ecansudo=The user entered does not have sudo permissions
 forgot_eunix=The sudo-capable user entered does not exist!
+forgot_sudouser=Reset password for sudo-capable user
 
 __norefs=1