[JITLink][NFC] Make Block const in alignToBlock

[jobnoorman]

Summary

Block is not mutated so can be made const.

[lhames]

LGTM. Thanks!

llvm/include/llvm/ExecutionEngine/JITLink/JITLink.h

private:
 
   Section *Parent;
   const char *Data = nullptr;
   size_t Size = 0;
   std::vector<Edge> Edges;
 };
 
 // Align an address to conform with block alignment requirements.
-inline uint64_t alignToBlock(uint64_t Addr, Block &B) {
+inline uint64_t alignToBlock(uint64_t Addr, const Block &B) {
   uint64_t Delta = (B.getAlignmentOffset() - Addr) % B.getAlignment();
   return Addr + Delta;
 }
 
 // Align a orc::ExecutorAddr to conform with block alignment requirements.
-inline orc::ExecutorAddr alignToBlock(orc::ExecutorAddr Addr, Block &B) {
+inline orc::ExecutorAddr alignToBlock(orc::ExecutorAddr Addr, const Block &B) {
   return orc::ExecutorAddr(alignToBlock(Addr.getValue(), B));
 }
 
 // Returns true if the given blocks contains exactly one valid c-string.
 // Zero-fill blocks of size 1 count as valid empty strings. Content blocks
 // must end with a zero, and contain no zeros before the end.
 bool isCStringBlock(Block &B);