Change CommonModuleInfoProvider to a pointer.

Bug: 358427516
Test: Manually verified genereated ninja and mk files, unit tests.
Change-Id: I53a6dd718232735decbeb93febfd269dd9449e86
diff --git a/android/makevars.go b/android/makevars.go
index e1d947d..7017e7d 100644
--- a/android/makevars.go
+++ b/android/makevars.go
@@ -259,7 +259,7 @@
 	singletonDists.lock.Unlock()
 
 	ctx.VisitAllModuleProxies(func(m ModuleProxy) {
-		commonInfo, _ := OtherModuleProvider(ctx, m, CommonModuleInfoProvider)
+		commonInfo := OtherModulePointerProviderOrDefault(ctx, m, CommonModuleInfoProvider)
 		if provider, ok := OtherModuleProvider(ctx, m, ModuleMakeVarsInfoProvider); ok &&
 			commonInfo.Enabled {
 			mctx := &makeVarsContext{