fix ELF compressed header and skip duplicate sections

src/elf/elf.h

@@ -971,7 +971,8 @@ typedef struct ELF_Chdr32
 
 typedef struct ELF_Chdr64
 {
-  U64 ch_type;
+  U32 ch_type;
+  U32 ch_reserved;
   U64 ch_size;
   U64 ch_addr_align;
 } ELF_Chdr64;