From: Jacek Caban <jacek@codeweavers.com>
Don't use pthread for libvpx in mingw builds.


diff --git a/media/libvpx/vpx_config_x86-win32-gcc.h b/media/libvpx/vpx_config_x86-win32-gcc.h
index 5bc3efb..e60f84d 100644
--- a/media/libvpx/vpx_config_x86-win32-gcc.h
+++ b/media/libvpx/vpx_config_x86-win32-gcc.h
@@ -32,7 +32,8 @@
 #define HAVE_AVX2 1
 #define HAVE_VPX_PORTS 1
 #define HAVE_STDINT_H 1
-#define HAVE_PTHREAD_H 1
+#undef HAVE_PTHREAD_H
+#define HAVE_PTHREAD_H 0
 #define HAVE_SYS_MMAN_H 1
 #define HAVE_UNISTD_H 1
 #define CONFIG_DEPENDENCY_TRACKING 1
diff --git a/media/libvpx/vpx_config_x86_64-win64-gcc.h b/media/libvpx/vpx_config_x86_64-win64-gcc.h
index 4ff4339..b056a0e 100644
--- a/media/libvpx/vpx_config_x86_64-win64-gcc.h
+++ b/media/libvpx/vpx_config_x86_64-win64-gcc.h
@@ -32,7 +32,8 @@
 #define HAVE_AVX2 1
 #define HAVE_VPX_PORTS 1
 #define HAVE_STDINT_H 1
-#define HAVE_PTHREAD_H 1
+#undef HAVE_PTHREAD_H
+#define HAVE_PTHREAD_H 0
 #define HAVE_SYS_MMAN_H 1
 #define HAVE_UNISTD_H 1
 #define CONFIG_DEPENDENCY_TRACKING 1