support/download/cargo-post-process: fix shellcheck

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

.checkpackageignore

@@ -1527,7 +1527,6 @@ support/dependencies/check-host-tar.sh Shellcheck
 support/dependencies/check-host-xzcat.sh Shellcheck
 support/dependencies/dependencies.sh Shellcheck
 support/download/bzr Shellcheck lib_shellscript.ConsecutiveEmptyLines
-support/download/cargo-post-process Shellcheck
 support/download/file Shellcheck
 support/download/go-post-process Shellcheck
 support/download/hg Shellcheck

support/download/cargo-post-process

@@ -2,6 +2,7 @@
 
 set -e
 
+# shellcheck source=helpers source-path=SCRIPTDIR
 . "${0%/*}/helpers"
 
 while getopts "n:o:" OPT; do
@@ -28,7 +29,7 @@ mkdir -p .cargo/
 mkdir -p "${CARGO_HOME}"
 flock "${CARGO_HOME}"/.br-lock \
 cargo vendor \
-    --manifest-path ${BR_CARGO_MANIFEST_PATH-Cargo.toml} \
+    --manifest-path "${BR_CARGO_MANIFEST_PATH-Cargo.toml}" \
     --locked VENDOR \
     > .cargo/config