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[truetype] Fix multiple calls of `FT_Get_MM_Var' (#52955).

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Set
`face->blend->num_axis' in case we have to initialize the
`face->blend'.

git/fs: mount .git/fs: mount/attach disallowed

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,3 +1,11 @@

+2018-01-26  Ben Wagner  <[email protected]>

+

+	[truetype] Fix multiple calls of `FT_Get_MM_Var' (#52955).

+

+	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Set

+	`face->blend->num_axis' in case we have to initialize the

+	`face->blend'.

+

 2018-01-23  Alexei Podtelezhnikov  <[email protected]>

 	[apinames] Anonymous version map for GNU linker.

--- a/src/truetype/ttgxvar.c

+++ b/src/truetype/ttgxvar.c

@@ -2048,7 +2048,8 @@

       if ( FT_NEW( face->blend ) )

         goto Exit;

-      num_axes = fvar_head.axisCount;

+      num_axes              = fvar_head.axisCount;

+      face->blend->num_axis = num_axes;

     }

     else

       num_axes = face->blend->num_axis;