target-ppc: Fix overallocation of opcode tables

create_new_table() should allocate 0x20 opc_handler_t pointers, but
actually allocates 0x20 opc_handler_t structs.  Fix this.
Signed-off-by: NStuart Brady <sdb@zubnet.me.uk>
Reviewed-by: NTom Musta <tommusta@gmail.com>
Tested-by: NTom Musta <tommusta@gmail.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

target-ppc/translate_init.c

@@ -7434,7 +7434,7 @@ static int create_new_table (opc_handler_t **table, unsigned char idx)
 {
     opc_handler_t **tmp;
 
-    tmp = g_malloc(0x20 * sizeof(opc_handler_t));
+    tmp = g_new(opc_handler_t *, 0x20);
     fill_new_table(tmp, 0x20);
     table[idx] = (opc_handler_t *)((uintptr_t)tmp | PPC_INDIRECT);