Fixes an issue with setup.exe which could prevent Jitsi from applying a delta update.

src/native/windows/run/registry.c

@@ -45,6 +45,8 @@ Run_getRegSzValue(HKEY key, LPCTSTR name, LPTSTR *data)
                     }
                 }
             }
+            else
+                error = ERROR_NOT_ENOUGH_MEMORY;
         }
         else
             error = ERROR_FILE_NOT_FOUND;

src/native/windows/setup/setup.c

@@ -861,7 +861,16 @@ Setup_findProductIdByPackageCode(LPCTSTR packageCode, LPTSTR *productId)
                 free(packageCodeOfProductId);
             }
             else
-                LastError_setLastError(error, _T(__FILE__), __LINE__);
+            {
+                /*
+                 * We failed to read one PackageCode out of many while looking
+                 * for ours. Eventually, it makes no difference whether the
+                 * failed one was ours or not. Most importantly, we cannot give
+                 * up the search because the failed one may have not been ours
+                 * anyway.
+                 */
+                error = ERROR_SUCCESS;
+            }
             RegCloseKey(subKey);
             if (ERROR_SUCCESS != error)
                 break;