FMT_MSC_VER -> FMT_MSC_VERSION

test/format-test.cc

@@ -2150,7 +2150,7 @@ TEST(format_test, format_string_errors) {
   EXPECT_ERROR_NOARGS("foo", nullptr);
   EXPECT_ERROR_NOARGS("}", "unmatched '}' in format string");
   EXPECT_ERROR("{0:s", "unknown format specifier", date);
-#  if !FMT_MSC_VER || FMT_MSC_VER >= 1916
+#  if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1916
   // This causes an detail compiler error in MSVC2017.
   EXPECT_ERROR("{:{<}", "invalid fill character '{'", int);
   EXPECT_ERROR("{:10000000000}", "number is too big", int);