[libc++abi] is_strcmp parameter to is_equal is unused for WIN32
am: 410f4950ad

Change-Id: I2a1af8c03d2362b7daf7066bd368344174124911
diff --git a/src/private_typeinfo.cpp b/src/private_typeinfo.cpp
index ef9466e..653c937 100644
--- a/src/private_typeinfo.cpp
+++ b/src/private_typeinfo.cpp
@@ -64,6 +64,7 @@
         return x == y;
     return strcmp(x->name(), y->name()) == 0;
 #else
+    (void) use_strcmp;
     return (x == y) || (strcmp(x->name(), y->name()) == 0);
 #endif
 }