crt: msvcr70.def.in: Add missing __CxxCallUnwindVecDtor

Visual Studio .NET 2002 version of msvcr70.dll library (7.00.9466.0)
contains additional symbol __CxxCallUnwindVecDtor. Some older library
version (7.00.9210.0) does not have this symbol. Same set of symbols as in
the released .NET 2002 version is available also in Visual Studio .NET 2002
Service Pack 1 version of msvcr70.dll library (7.00.9955.0).

Signed-off-by: LIU Hao <lh_mouse@126.com>

mingw-w64-crt/lib32/msvcr70.def.in

diff --git a/mingw-w64-crt/lib32/msvcr70.def.in b/mingw-w64-crt/lib32/msvcr70.def.in
index 31d09fe..b01988c 100644
--- a/mingw-w64-crt/lib32/msvcr70.def.in
+++ b/mingw-w64-crt/lib32/msvcr70.def.in
@@ -144,6 +144,7 @@
 _Strftime
 _XcptFilter
 __CxxCallUnwindDtor
+__CxxCallUnwindVecDtor
 __CxxDetectRethrow
 __CxxExceptionFilter
 __CxxFrameHandler