[DebugInfo] Simplify the constructor of DWARFDebugAranges::Range. NFC.

This removes the default values of the arguments. The only caller,
DWARFDebugAranges::construct(), provides all three parameters.

Differential Revision: https://reviews.llvm.org/D72757

Author: igorkudrin

llvm/include/llvm/DebugInfo/DWARF/DWARFDebugAranges.h

@@ -32,8 +32,7 @@ class DWARFDebugAranges {
   void construct();
 
   struct Range {
-    explicit Range(uint64_t LowPC = -1ULL, uint64_t HighPC = -1ULL,
-                   uint64_t CUOffset = -1ULL)
+    explicit Range(uint64_t LowPC, uint64_t HighPC, uint64_t CUOffset)
       : LowPC(LowPC), Length(HighPC - LowPC), CUOffset(CUOffset) {}
 
     void setHighPC(uint64_t HighPC) {