build: better not use a local var, it breaks various shells

diff --git a/build/mkversion.sh b/build/mkversion.sh
index ce6eb83..1b1819e 100755 (executable)
--- a/build/mkversion.sh
+++ b/build/mkversion.sh
@@ -1,7 +1,5 @@
 #!/bin/sh
 
-local variant
-
 if [ "${4%%/*}" = "branches" ]; then
        variant="LuCI ${4##*[-/]} Branch"
 elif [ "${4%%/*}" = "tags" ]; then