fix tr err for Mac

acme.sh

@@ -1882,21 +1882,25 @@ _send_signed_request() {
       _err "Can not post to $url"
       return 1
     fi
-    _debug2 original "$response"
-    response="$(echo "$response" | _normalizeJson)"
 
     responseHeaders="$(cat "$HTTP_HEADER")"
-
     _debug2 responseHeaders "$responseHeaders"
-    _debug2 response "$response"
+
     code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\r\n")"
     _debug code "$code"
 
-    _CACHED_NONCE="$(echo "$responseHeaders" | grep "Replay-Nonce:" | _head_n 1 | tr -d "\r\n " | cut -d ':' -f 2)"
+    _debug2 original "$response"
+    if echo "$responseHeaders" | grep -i "Content-Type: application/json" >/dev/null 2>&1; then
+      response="$(echo "$response" | _normalizeJson)"
+    fi
+    _debug2 response "$response"
 
+    _CACHED_NONCE="$(echo "$responseHeaders" | grep -i "Replay-Nonce:" | _head_n 1 | tr -d "\r\n " | cut -d ':' -f 2)"
+
+    if ! _startswith "$code" "2"; then 
       _body="$response"
       if [ "$needbase64" ]; then
-      _body="$(echo "$_body" | _dbase64 | tr -d '\0')"
+        _body="$(echo "$_body" | _dbase64 multiline)"
         _debug3 _body "$_body"
       fi
 
@@ -1906,6 +1910,7 @@ _send_signed_request() {
         _sleep $_sleep_retry_sec
         continue
       fi
+    fi
     break
   done
 
@@ -4113,14 +4118,14 @@ $_authorizations_map"
     Le_LinkCert="$(echo "$response" | tr -d '\r\n' | _egrep_o '"certificate" *: *"[^"]*"' | cut -d '"' -f 4)"
 
     _tempSignedResponse="$response"
-    if ! _send_signed_request "$Le_LinkCert" "" "needbase64"; then
+    if ! _send_signed_request "$Le_LinkCert"; then
       _err "Sign failed, can not download cert:$Le_LinkCert."
       _err "$response"
       _on_issue_err "$_post_hook"
       return 1
     fi
 
-    echo "$response" | _dbase64 "multiline" >"$CERT_PATH"
+    echo "$response" >"$CERT_PATH"
 
     if [ "$(grep -- "$BEGIN_CERT" "$CERT_PATH" | wc -l)" -gt "1" ]; then
       _debug "Found cert chain"