Use the new function also in jsx-indent-props

Although the logic is quite different here, the new function seems to work (tests are passing)

Author: jseminck

lib/rules/jsx-indent-props.js

@@ -29,6 +29,8 @@
  */
 'use strict';
 
+const astUtil = require('../util/ast');
+
 // ------------------------------------------------------------------------------
 // Rule Definition
 // ------------------------------------------------------------------------------
@@ -136,20 +138,6 @@ module.exports = {
       return indent ? indent[0].length : 0;
     }
 
-    /**
-     * Checks node is the first in its own start line. By default it looks by start line.
-     * @param {ASTNode} node The node to check
-     * @param {Boolean} [byEndLocation] Lookup based on start position or end
-     * @return {Boolean} true if its the first in the its start line
-     */
-    function isNodeFirstInLine(node, byEndLocation) {
-      const firstToken = byEndLocation === true ? sourceCode.getLastToken(node, 1) : sourceCode.getTokenBefore(node);
-      const startLine = byEndLocation === true ? node.loc.end.line : node.loc.start.line;
-      const endLine = firstToken ? firstToken.loc.end.line : -1;
-
-      return startLine !== endLine;
-    }
-
     /**
      * Check indent for nodes list
      * @param {ASTNode[]} nodes list of node objects
@@ -161,7 +149,7 @@ module.exports = {
         const nodeIndent = getNodeIndent(node, false, excludeCommas);
         if (
           node.type !== 'ArrayExpression' && node.type !== 'ObjectExpression' &&
-          nodeIndent !== indent && isNodeFirstInLine(node)
+          nodeIndent !== indent && astUtil.isNodeFirstInLine(context, node)
         ) {
           report(node, indent, nodeIndent);
         }