bump libsecp256k1 version

contrib/build-linux/appimage/build.sh

@@ -12,7 +12,7 @@ CACHEDIR="$CONTRIB/build-linux/appimage/.cache/appimage"
 # pinned versions
 PYTHON_VERSION=3.6.8
 PKG2APPIMAGE_COMMIT="83483c2971fcaa1cb0c1253acd6c731ef8404381"
-LIBSECP_VERSION="452d8e4d2a2f9f1b5be6b02e18f1ba102e5ca0b4"
+LIBSECP_VERSION="b408c6a8b287003d1ade5709e6f7bc3c7f1d5be7"
 
 
 VERSION=`git describe --tags --dirty --always`

contrib/build-wine/build-secp256k1.sh

@@ -29,7 +29,8 @@ else
     git pull
 fi
 
-git reset --hard 452d8e4d2a2f9f1b5be6b02e18f1ba102e5ca0b4
+LIBSECP_VERSION="b408c6a8b287003d1ade5709e6f7bc3c7f1d5be7"
+git reset --hard "$LIBSECP_VERSION"
 git clean -f -x -q
 
 build_dll i686-w64-mingw32  # 64-bit would be: x86_64-w64-mingw32

contrib/osx/make_osx

@@ -5,7 +5,7 @@ PYTHON_VERSION=3.6.4
 BUILDDIR=/tmp/electrum-build
 PACKAGE=Electrum
 GIT_REPO=https://github.com/spesmilo/electrum
-LIBSECP_VERSION=452d8e4d2a2f9f1b5be6b02e18f1ba102e5ca0b4
+LIBSECP_VERSION="b408c6a8b287003d1ade5709e6f7bc3c7f1d5be7"
 
 . $(dirname "$0")/base.sh