Fix implicit conversion warning (dotnet#48863)

This change is released under the MIT license.

Signed-off-by: Zhenbo Li litimetal@gmail.com

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Co-authored-by: Endle <Endle@users.noreply.github.com>

src/mono/mono/mini/local-propagation.c

@@ -507,7 +507,7 @@ mono_local_cprop (MonoCompile *cfg)
 	max = cfg->next_vreg;
 	defs = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * cfg->next_vreg);
 	def_index = (gint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
-	cfg->cbb = bb_opt = mono_mempool_alloc0 ((cfg)->mempool, sizeof (MonoBasicBlock));
+	cfg->cbb = bb_opt = (MonoBasicBlock *)mono_mempool_alloc0 ((cfg)->mempool, sizeof (MonoBasicBlock));
 
 	for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
 		MonoInst *ins;