8286077: Wider MultiByte conversions

Reviewed-by: mbalao
Backport-of: db81dae16f975d7d27c9acf3f4775c9d389895e2

src/java.security.jgss/windows/native/libsspi_bridge/sspi.cpp

@@ -897,7 +897,7 @@ gss_init_sec_context(OM_uint32 *minor_status,
     gss_buffer_desc tn;
     gss_display_name(&minor, target_name, &tn, NULL);
     int len = MultiByteToWideChar(CP_UTF8, 0, (LPCCH)tn.value, (int)tn.length,
-            outName, sizeof(outName) - 1);
+            outName, (sizeof(outName) / sizeof(outName[0])) - 1);
     if (len == 0) {
         goto err;
     }