Fix corruption in x86 callback

pkg/etw/wrapper_64.go

@@ -4,6 +4,7 @@
 package etw
 
 import (
+	"github.com/Microsoft/go-winio/pkg/guid"
 	"golang.org/x/sys/windows"
 )
 
@@ -40,3 +41,12 @@ func eventSetInformation(
 		information,
 		length)
 }
+
+// providerCallbackAdapter acts as the first-level callback from the C/ETW side
+// for provider notifications. Because Go has trouble with callback arguments of
+// different size, it has only pointer-sized arguments, which are then cast to
+// the appropriate types when calling providerCallback.
+func providerCallbackAdapter(sourceID *guid.GUID, state uint32, level uint8, matchAnyKeyword uintptr, matchAllKeyword uintptr, filterData uintptr, i uintptr) uintptr {
+	providerCallback(*sourceID, ProviderState(state), Level(level), uint64(matchAnyKeyword), uint64(matchAllKeyword), filterData, i)
+	return 0
+}