Fix definition list tightness

index.js

@@ -82,6 +82,7 @@ module.exports = function deflist_plugin(md) {
 
     // Start list
     listTokIdx = state.tokens.length;
+    tight = true;
 
     token     = state.push('dl_open', 'dl', 1);
     token.map = listLines = [ startLine, 0 ];
@@ -102,7 +103,6 @@ module.exports = function deflist_plugin(md) {
     /*eslint no-labels:0,block-scoped-var:0*/
     OUTER:
     for (;;) {
-      tight = true;
       prevEmptyEnd = false;
 
       token          = state.push('dt_open', 'dt', 1);

test/fixtures/deflist.txt

@@ -103,6 +103,59 @@ Non-term 2
 :</p>
 .
 
+
+List is tight iff all dts are tight:
+.
+Term 1
+: foo
+: bar
+
+Term 2
+: foo
+
+: bar
+.
+<dl>
+<dt>Term 1</dt>
+<dd>
+<p>foo</p>
+</dd>
+<dd>
+<p>bar</p>
+</dd>
+<dt>Term 2</dt>
+<dd>
+<p>foo</p>
+</dd>
+<dd>
+<p>bar</p>
+</dd>
+</dl>
+.
+
+
+Regression test (first paragraphs shouldn't be tight):
+.
+Term 1
+: foo
+
+  bar
+Term 2
+: foo
+.
+<dl>
+<dt>Term 1</dt>
+<dd>
+<p>foo</p>
+<p>bar
+Term 2</p>
+</dd>
+<dd>
+<p>foo</p>
+</dd>
+</dl>
+.
+
 Definition lists should be second last in the queue. Exemplī grātiā, this isn't a valid one:
 
 .