[LyX/master] Simplify reversion code (keeping the same output)

[José Matos]

commit 4419f6e0591bdaed0f6cebfd6b5d108363628f88
Author: José Matos <jamatos at lyx.org>
Date:   Mon Sep 21 14:36:52 2020 +0100

    Simplify reversion code (keeping the same output)
---
 lib/lyx2lyx/lyx_2_4.py |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/lib/lyx2lyx/lyx_2_4.py b/lib/lyx2lyx/lyx_2_4.py
index 9c72406..74f17cf 100644
--- a/lib/lyx2lyx/lyx_2_4.py
+++ b/lib/lyx2lyx/lyx_2_4.py
@@ -3506,16 +3506,13 @@ def revert_totalheight(document):
                 special = m.group(1)
             mspecial = special.split(',')
             for spc in mspecial:
-                if spc[:7] == "height=":
+                if spc.startswith("height="):
                     oldheight = spc.split('=')[1]
                     ms = rxx.search(oldheight)
                     if ms:
-                        oldval = ms.group(1)
                         oldunit = ms.group(2)
-                        if len(oldval) > 1 and oldval[1] == ".":
-                            oldval = "0" + oldval
                         if oldunit in list(relative_heights.keys()):
-                            oldval = str(float(oldval) * 100)
+                            oldval = str(float(ms.group(1)) * 100)
                             oldunit = relative_heights[oldunit]
                             oldheight = oldval + oldunit
                     mspecial.remove(spc)