Correct printer URI validation 2

Quick fix for a bug introduced in CL:2204269.

BUG=none, correction of typo made in other CL
TEST=none, will be tested with other CL

Change-Id: Ic97ac272545252942eb8f220336f414ac6cf90c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2315347
Commit-Queue: Piotr Pawliczek <pawliczek@chromium.org>
Auto-Submit: Piotr Pawliczek <pawliczek@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791343}

chrome/browser/chromeos/printing/cups_printers_manager.cc

@@ -342,7 +342,7 @@ class CupsPrintersManagerImpl
     }
 
     // Behavior for querying a non-IPP uri is undefined and disallowed.
-    if (IsIppUri(printer->uri())) {
+    if (!IsIppUri(printer->uri())) {
       PRINTER_LOG(ERROR) << "Unable to complete printer status request. "
                          << "Printer uri is invalid. Printer id: "
                          << printer_id;