Add _MSC_VER check to MSVC ARM compiler workaround

While _M_ARM is a MSVC specific builtin define, mingw headers do
also define it (in code, as opposed to a compiler built in
define), just as the same headers do for e.g. _M_IX86 and _M_X64.

This avoids warnings about unrecognized pragmas, when compiling
for armv7 mingw.

The original compiler bug (from QTBUG-42038) probably already is
fixed and/or no longer in scope.

Change-Id: I98722e2a7ee1de4f1937a866555ec460f5d898d1
Pick-to: 5.15
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

0 files changed, 0 insertions, 0 deletions