Stop tracking .debug_line_str in DWARFUnit. NFC.

llvm-svn: 323701
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
index c472346..da3226e 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
@@ -282,8 +282,8 @@
             DCtx, DObj.getInfoSection(), DCtx.getDebugAbbrev(),
             &DObj.getRangeSection(), DObj.getStringSection(),
             DObj.getStringOffsetSection(), &DObj.getAppleObjCSection(),
-            DObj.getLineSection(), DObj.getLineStringSection(),
-            DCtx.isLittleEndian(), false, TUSection, nullptr));
+            DObj.getLineSection(), DCtx.isLittleEndian(), false, TUSection,
+            nullptr));
         break;
       }
       case dwarf::DW_UT_skeleton:
@@ -297,8 +297,8 @@
             DCtx, DObj.getInfoSection(), DCtx.getDebugAbbrev(),
             &DObj.getRangeSection(), DObj.getStringSection(),
             DObj.getStringOffsetSection(), &DObj.getAppleObjCSection(),
-            DObj.getLineSection(), DObj.getLineStringSection(),
-            DCtx.isLittleEndian(), false, CUSection, nullptr));
+            DObj.getLineSection(), DCtx.isLittleEndian(), false, CUSection,
+            nullptr));
         break;
       }
       default: { llvm_unreachable("Invalid UnitType."); }