Use existing variable. NFC.

llvm-svn: 290112
diff --git a/lld/ELF/Relocations.cpp b/lld/ELF/Relocations.cpp
index 1c87acc..f7dcc5d 100644
--- a/lld/ELF/Relocations.cpp
+++ b/lld/ELF/Relocations.cpp
@@ -156,7 +156,7 @@
     if (In<ELFT>::Got->addDynTlsEntry(Body)) {
       uintX_t Off = In<ELFT>::Got->getGlobalDynOffset(Body);
       In<ELFT>::RelaDyn->addReloc({Target->TlsDescRel, In<ELFT>::Got, Off,
-                                   !Body.isPreemptible(), &Body, 0});
+                                   !IsPreemptible, &Body, 0});
     }
     if (Expr != R_TLSDESC_CALL)
       C.Relocations.push_back({Expr, Type, Offset, Addend, &Body});