commit 8c7f039f7e02b8fad316decd2bb61b79f0592550
Author: Tanmai Khanna <khanna.tanmai@gmail.com>
Date:   Mon Jul 6 20:23:09 2020 +0530

    apply same modification to combineWblanks in postchunk

diff --git a/apertium/postchunk.cc b/apertium/postchunk.cc
index 7ef012f..5a27a4a 100644
--- a/apertium/postchunk.cc
+++ b/apertium/postchunk.cc
@@ -241,10 +241,18 @@ Postchunk::gettingLemmaFromWord(string attr)
 string
 Postchunk::combineWblanks(string wblank_current, string wblank_to_add)
 {
-  if(wblank_current.empty())
+  if(wblank_current.empty() && wblank_to_add.empty())
+  {
+    return wblank_current;
+  }
+  else if(wblank_current.empty())
   {
     return wblank_to_add;
   }
+  else if(wblank_to_add.empty())
+  {
+    return wblank_current;
+  }
   
   string new_out_wblank;
   for(string::const_iterator it = wblank_current.begin(); it != wblank_current.end(); it++)