[LyX/master] Fix small glitch with \underXXXarrow and \overXXXarrow

[Enrico Forestieri]

commit 400cb1b80f0779f15d42c29c26ae71c0d767868b
Author: Enrico Forestieri <forenr at lyx.org>
Date:   Fri Feb 12 23:51:29 2021 +0100

    Fix small glitch with \underXXXarrow and \overXXXarrow
    
    When the argument is long enough, the arrow in the on-screen representation
    was not covering the first or the last glyphs. For example, using
    \overrightarrow{abcdefghijklmnopqrstuvwxyz}
    the 'a' was drawn outside the covering arrow.
---
 src/mathed/MathSupport.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mathed/MathSupport.cpp b/src/mathed/MathSupport.cpp
index 1203a31..a4b0693 100644
--- a/src/mathed/MathSupport.cpp
+++ b/src/mathed/MathSupport.cpp
@@ -235,7 +235,7 @@ double const arrow[] = {
 	0.0500, 0.7500, 0.2000, 0.6000, 0.3500, 0.3500,
 	0.5000, 0.0500, 0.6500, 0.3500, 0.8000, 0.6000,
 	0.9500, 0.7500,
-	3, 0.5000, 0.1500, 0.5000, 0.9500,
+	3, 0.5000, 0.1500, 0.5000, 1.0000,
 	0
 };