Fix segfault when route includes very short segments.

features/step_definitions/data.js

@@ -17,7 +17,7 @@ module.exports = function () {
         this.setContractArgs(args, callback);
     });
 
-    this.Given(/^a grid size of (\d+) meters$/, (meters, callback) => {
+    this.Given(/^a grid size of ([0-9.]+) meters$/, (meters, callback) => {
         this.setGridSize(meters);
         callback();
     });

features/testbot/fixed.feature

@@ -24,3 +24,18 @@ Feature: Fixed bugs, kept to check for regressions
         When I route I should get
             | from | to | route   |
             | x    | y  | abc,abc |
+
+    Scenario: Step trimming with very short segments
+        Given a grid size of 0.1 meters
+        Given the node map
+            | a | 1 | b | c | d | 2 | e |
+
+        Given the ways
+            | nodes | oneway |
+            | ab    | yes    |
+            | bcd   | yes    |
+            | de    | yes    |
+
+        When I route I should get
+            | from | to | route     |
+            | 1    | 2  | bcd,bcd   |