feat(build): fixing windows build issue, #5370

appveyor.yml

@@ -14,7 +14,7 @@ install:
   - npm install
   - npm install
   - npm install -g grunt-cli
   - npm install -g grunt-cli
   # install gcc (needed for sqlite3)
   # install gcc (needed for sqlite3)
-  - choco install -y mingw
+  - choco install -y mingw -limitoutput
   - set PATH=C:\tools\mingw64\bin;%PATH%
   - set PATH=C:\tools\mingw64\bin;%PATH%
   - echo %PATH%
   - echo %PATH%
   - echo %GOPATH%
   - echo %GOPATH%

pkg/log/syslog_windows.go

+//+build windows
+
+package log
+
+import "github.com/inconshreveable/log15"
+
+type SysLogHandler struct {
+}
+
+func NewSyslog() *SysLogHandler {
+	return &SysLogHandler{}
+}
+
+func (sw *SysLogHandler) Init() error {
+	return nil
+}
+
+func (sw *SysLogHandler) Log(r *log15.Record) error {
+	return nil
+}