Fix jsx-indent on multiline ternary

Author: Yannick Croissant

lib/rules/jsx-indent.js

@@ -227,6 +227,11 @@ module.exports = {
         // Use the parent in a list or an array
         if (prevToken.type === 'JSXText' || prevToken.type === 'Punctuator' && prevToken.value === ',') {
           prevToken = sourceCode.getNodeByRangeIndex(prevToken.start).parent;
+        // Use the first non-punctuator token in a conditional expression
+        } else if (prevToken.type === 'Punctuator' && prevToken.value === ':') {
+          do {
+            prevToken = sourceCode.getTokenBefore(prevToken);
+          } while (prevToken.type === 'Punctuator');
         }
         var parentElementIndent = getNodeIndent(prevToken);
         var indent = (