Fix compilation on i386
diff --git a/ltrace-elf.c b/ltrace-elf.c
index 2bfe819..89ddc3a 100644
--- a/ltrace-elf.c
+++ b/ltrace-elf.c
@@ -823,8 +823,10 @@
 				filename);
 			return -1;
 		}
-		lte.entry_addr = (GElf_Addr)entry;
-		lte.bias = (GElf_Addr)entry - lte.ehdr.e_entry;
+		/* XXX The double cast should be removed when
+		 * arch_addr_t becomes integral type.  */
+		lte.entry_addr = (GElf_Addr)(uintptr_t)entry;
+		lte.bias = (GElf_Addr)(uintptr_t)entry - lte.ehdr.e_entry;
 
 	} else {
 		GElf_Phdr phdr;