stacktrace: don't try to build generic_fp backtracer on windows

src/stacktrace.cc

diff --git a/src/stacktrace.cc b/src/stacktrace.cc
index b4a5c96..f7696fb 100644
--- a/src/stacktrace.cc
+++ b/src/stacktrace.cc
@@ -124,7 +124,7 @@
 #define HAVE_GST_libunwind
 #endif // USE_LIBUNWIND
 
-#if defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__) || defined(__riscv) || defined(__arm__))
+#if !defined(_WIN32) && defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__) || defined(__riscv) || defined(__arm__))
 // NOTE: legacy 32-bit arm works fine with recent clangs, but is broken in gcc: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92172
 #define STACKTRACE_INL_HEADER "stacktrace_generic_fp-inl.h"
 #define GST_SUFFIX generic_fp