Fix / suppress new unused warnings for mingw+clang

Bug: 69933068
Test: mmma system/core
Change-Id: I089166a979d3d8c5ada38a7745d507b555048499
diff --git a/libcutils/sockets_windows.cpp b/libcutils/sockets_windows.cpp
index 3e49b85..df14712 100644
--- a/libcutils/sockets_windows.cpp
+++ b/libcutils/sockets_windows.cpp
@@ -85,6 +85,6 @@
     return -1;
 }
 
-int android_get_control_socket(const char* name) {
+int android_get_control_socket(const char*) {
     return -1;
 }