net/mail: AddressList fails to parse addresses with a dot

Fixes #4938.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/12657044

src/pkg/net/mail/message.go

@@ -342,7 +342,7 @@ func (p *addrParser) consumePhrase() (phrase string, err error) {
 			word, err = p.consumeQuotedString()
 		} else {
 			// atom
-			word, err = p.consumeAtom(false)
+			word, err = p.consumeAtom(true)
 		}
 
 		// RFC 2047 encoded-word starts with =?, ends with ?=, and has two other ?s.

src/pkg/net/mail/message_test.go

@@ -225,6 +225,16 @@ func TestAddressParsing(t *testing.T) {
 				},
 			},
 		},
+		// Custom example with "." in name. For issue 4938
+		{
+			`Asem H. <noreply@example.com>`,
+			[]*Address{
+				{
+					Name:    `Asem H.`,
+					Address: "noreply@example.com",
+				},
+			},
+		},
 	}
 	for _, test := range tests {
 		if len(test.exp) == 1 {