[Fix] Adjust $CURL_COMPRESSED_FLAG usage for curl, fix #1562

nvm.sh

@@ -90,7 +90,7 @@ nvm_get_latest() {
     if nvm_curl_use_compression; then
       CURL_COMPRESSED_FLAG="--compressed"
     fi
-    NVM_LATEST_URL="$(curl "${CURL_COMPRESSED_FLAG:-}" -q -w "%{url_effective}\n" -L -s -S http://latest.nvm.sh -o /dev/null)"
+    NVM_LATEST_URL="$(curl ${CURL_COMPRESSED_FLAG:-} -q -w "%{url_effective}\n" -L -s -S http://latest.nvm.sh -o /dev/null)"
   elif nvm_has "wget"; then
     NVM_LATEST_URL="$(wget http://latest.nvm.sh --server-response -O /dev/null 2>&1 | command awk '/^  Location: /{DEST=$2} END{ print DEST }')"
   else
@@ -110,7 +110,7 @@ nvm_download() {
     if nvm_curl_use_compression; then
       CURL_COMPRESSED_FLAG="--compressed"
     fi
-    curl --fail "${CURL_COMPRESSED_FLAG:-}" -q "$@"
+    curl --fail ${CURL_COMPRESSED_FLAG:-} -q "$@"
   elif nvm_has "wget"; then
     # Emulate curl with wget
     ARGS=$(nvm_echo "$@" | command sed -e 's/--progress-bar /--progress=bar /' \