lyx_2_0.py: fix Python error due to uninitialized variable

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@34447 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/lib/lyx2lyx/lyx_2_0.py b/lib/lyx2lyx/lyx_2_0.py
index 693e16d55bbf8ae03e0eb33f2fd910ab91357b03..5115a57a97c72526743a035d45d70925b12a5cad 100644 (file)
--- a/lib/lyx2lyx/lyx_2_0.py
+++ b/lib/lyx2lyx/lyx_2_0.py
@@ -1081,6 +1081,7 @@ def revert_mhchem(document):
     i = 0
     j = 0
     k = 0
+    mhchem = "off"
     i = find_token(document.header, "\\use_mhchem 1", 0)
     if i != -1:
         mhchem = "auto"