Switch assert(0/false) llvm_unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140367 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index a5332b9..aa4b12b 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -4730,7 +4730,7 @@
       SourceLocation TokLoc = GetTokenLoc(I);
       switch (LocationCompare(SrcMgr, TokLoc, cursorRange)) {
       case RangeBefore:
-        assert(0 && "Infeasible");
+        llvm_unreachable("Infeasible");
       case RangeAfter:
         break;
       case RangeOverlap: