[lld] [lld][Webassembly] Avoid a signed overflow on large sections (PR #178287)

[Omair Javaid via llvm-commits]

omjavaid wrote:

> This is failing on 32 bit Arm Linux:
> 
> https://lab.llvm.org/staging/#/builders/160/builds/1189
> 
> lld/test/wasm/large-debug-section.test lld/test/wasm/large-section.test lld/test/wasm/section-too-large.test
> 
> The failure got masked because bot was already failing.

@FatihBAKIR I am going revert this change temporarily to unblock the buildbot. 

https://github.com/llvm/llvm-project/pull/178287