Update meson invocation to avoid warnings

README.adoc

@@ -49,7 +49,7 @@ Runtime dependencies for reverse image search:
  xdg-utils, cURL, jq
 
  $ git clone --recursive https://git.janouch.name/p/fiv.git
- $ meson builddir
+ $ meson setup builddir
  $ cd builddir
  $ meson compile
 

msys2-cross-configure.sh

@@ -97,7 +97,7 @@ setup() {
 	endian = 'little'
 	EOF
 
-	meson --buildtype=debugoptimized --prefix="$packagedir" \
+	meson setup --buildtype=debugoptimized --prefix="$packagedir" \
 		--bindir . --libdir . --cross-file="$toolchain" "$builddir" "$sourcedir"
 }