bin/fmt: Fix shellcheck issue (#4438)

Signed-off-by: Joakim Roubert <joakimr@axis.com>

.github/workflows/static_checks.yml

@@ -80,7 +80,6 @@ jobs:
       run: |
         find ./bin -type f \
         ! -name docker-build-proxy \
-        ! -name fmt \
         ! -name lint \
         ! -name _log.sh \
         ! -name minikube-start-hyperv.bat \

bin/fmt

@@ -8,7 +8,7 @@ dirs=$(go list -f \{\{.Dir\}\} ./... | grep -v controller/gen)
 # go list will list all subdirectories and goimports acts recursively.  This
 # results in certain files being reported multiple time.  Therefore, we must
 # dedup them.
-files=$(bin/goimports -l $dirs | sort -u)
+files=$(bin/goimports -l "$dirs" | sort -u)
 
 if [ -n "$files" ]; then
   for file in $files; do