vendor: pull in USB Windows fixes

vendor/github.com/karalabe/usb/appveyor.yml

@@ -22,8 +22,8 @@ environment:
 
 install:
   - rmdir C:\go /s /q
-  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.12.6.windows-%GOARCH%.zip
-  - 7z x go1.12.6.windows-%GOARCH%.zip -y -oC:\ > NUL
+  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.12.9.windows-%GOARCH%.zip
+  - 7z x go1.12.9.windows-%GOARCH%.zip -y -oC:\ > NUL
   - go version
   - gcc --version
 

vendor/github.com/karalabe/usb/hidapi/windows/hid.c

@@ -74,6 +74,8 @@ extern "C" {
 	#pragma warning(disable:4996)
 #endif
 
+#pragma GCC diagnostic ignored "-Wstringop-overflow"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -428,7 +430,7 @@ struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned shor
 			if (str) {
 				len = strlen(str);
 				cur_dev->path = (char*) calloc(len+1, sizeof(char));
-				strncpy(cur_dev->path, str, sizeof(cur_dev->path));
+				strncpy(cur_dev->path, str, len+1);
 				cur_dev->path[len] = '\0';
 			}
 			else