From 15be89a758e49a45ba394f1bff23791f9f4d5cd6 Mon Sep 17 00:00:00 2001
From: Alexey Andreev <konsoletyper@gmail.com>
Date: Mon, 28 Oct 2019 14:33:53 +0300
Subject: [PATCH] JS: fix source map generation in some cases

---
 .../java/org/teavm/debugging/information/LayerIterator.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/org/teavm/debugging/information/LayerIterator.java b/core/src/main/java/org/teavm/debugging/information/LayerIterator.java
index ee8e5ae59..0f091e048 100644
--- a/core/src/main/java/org/teavm/debugging/information/LayerIterator.java
+++ b/core/src/main/java/org/teavm/debugging/information/LayerIterator.java
@@ -26,7 +26,9 @@ class LayerIterator {
             methodIterators[i] = new MethodIterator(debugInformation.layers[i]);
         }
 
-        nextImpl();
+        if (!isEndReached()) {
+            nextImpl();
+        }
     }
 
     public boolean isEndReached() {