freecad: fix version minor

Fix #39099

srcpkgs/freecad/template

@@ -1,7 +1,7 @@
 # Template file for 'freecad'
 pkgname=freecad
 version=0.20.1
-revision=3
+revision=4
 wrksrc="FreeCAD-${version}"
 build_style=cmake
 
@@ -44,7 +44,9 @@ fi
 
 post_extract() {
 	# Report exact minor version
-	vsed -i -e "s,^\(set(PACKAGE_VERSION_MINOR\) .*,\1 \"${version#*.}\")," CMakeLists.txt
+	vminor=${version#*.}
+	vminor=${vminor%%.*}
+	vsed -i -e "s,^\(set(PACKAGE_VERSION_MINOR\) .*,\1 \"${vminor}\")," CMakeLists.txt
 
 	# SubWCRev.py (SCM check) reports "unknown" for these fields
 	vsed -e "s,\${PACKAGE_WCREF},${revision}_voidlinux," \