Fix --print-gc-sections with linker scripts.

Before it would never print anything.

Thanks to George Rimar for pointing it out.

llvm-svn: 295485
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index 8dfbfe8..a323d3a 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -252,7 +252,7 @@
     size_t SizeBefore = I->Sections.size();
 
     for (InputSectionBase<ELFT> *S : Symtab<ELFT>::X->Sections) {
-      if (!S->Live || S->Assigned)
+      if (S->Assigned)
         continue;
       // For -emit-relocs we have to ignore entries like
       //   .rela.dyn : { *(.rela.data) }