Mirror fixes from libcups:

- Allow empty resolution values in ipptool files.
- Fix memory leak in httpConnectAgain.
- Remove dead code in ipp_read_io.

cups/http.c

@@ -558,6 +558,8 @@ httpConnectAgain(http_t *http,		// I - HTTP connection
 
       return (false);
     }
+
+    free(new_creds);
   }
 
   free(orig_creds);

cups/ipp-file.c

@@ -1706,7 +1706,7 @@ parse_value(ipp_file_t      *file,	// I  - IPP data file
 	      yres = (int)strtol(ptr + 1, (char **)&ptr, 10);
 	  }
 
-	  if (ptr <= value || xres <= 0 || yres <= 0 || !ptr || (_cups_strcasecmp(ptr, "dpi") && _cups_strcasecmp(ptr, "dpc") && _cups_strcasecmp(ptr, "dpcm") && _cups_strcasecmp(ptr, "other")))
+	  if (*value && (ptr <= value || xres <= 0 || yres <= 0 || !ptr || (_cups_strcasecmp(ptr, "dpi") && _cups_strcasecmp(ptr, "dpc") && _cups_strcasecmp(ptr, "dpcm") && _cups_strcasecmp(ptr, "other"))))
 	  {
 	    report_error(file, "Bad resolution value \"%s\" on line %d of '%s'.", value, file->linenum, file->filename);
 	    return (false);

cups/ipp.c

@@ -5863,13 +5863,7 @@ ipp_read_io(void        *src,		// I - Data source
             case IPP_TAG_MEMBERNAME :
 	        // The value the name of the member in the collection, which
 		// we need to carry over...
-                if (!attr)
-                {
-		  _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("IPP memberName with no attribute."), 1);
-	          DEBUG_puts("1ipp_read_io: Member name without attribute.");
-		  goto rollback;
-                }
-		else if (n == 0)
+                if (n == 0)
 		{
 		  _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("IPP memberName value is empty."), 1);
 	          DEBUG_puts("1ipp_read_io: Empty member name value.");