Cleanup git-send-email.perl:extract_valid_email

- Fix the regular expressions for local addresses
- Fix the fallback regexp for non-local addresses, simplify the logic

Signed-off-by: Horst H. von Brand <vonbrand@inf.utfsm.cl>
Signed-off-by: Junio C Hamano <junkio@cox.net>

git-send-email.perl

@@ -314,18 +314,15 @@ sub extract_valid_address {
 	my $address = shift;
 
 	# check for a local address:
-	return $address if ($address =~ /^([\w\-]+)$/);
+	return $address if ($address =~ /^([\w\-.]+)$/);
 
 	if ($have_email_valid) {
 		return Email::Valid->address($address);
 	} else {
 		# less robust/correct than the monster regexp in Email::Valid,
 		# but still does a 99% job, and one less dependency
-		my $cleaned_address;
-		if ($address =~ /([^\"<>\s]+@[^<>\s]+)/) {
-			$cleaned_address = $1;
-		}
-		return $cleaned_address;
+		$address =~ /([\w\-.]+@[\w\-.]+)/;
+		return $1;
 	}
 }