Switch assert(0/false) llvm_unreachable.

llvm-svn: 140367
diff --git a/clang/lib/Index/ASTLocation.cpp b/clang/lib/Index/ASTLocation.cpp
index 8ea49c1..6746004 100644
--- a/clang/lib/Index/ASTLocation.cpp
+++ b/clang/lib/Index/ASTLocation.cpp
@@ -41,7 +41,7 @@
     return 0;
 
   switch (getKind()) {
-  default: assert(0 && "Invalid Kind");
+  default: llvm_unreachable("Invalid Kind");
   case N_Type:
     return 0;
   case N_Decl:
@@ -60,7 +60,7 @@
     return SourceRange();
 
   switch (getKind()) {
-  default: assert(0 && "Invalid Kind");
+  default: llvm_unreachable("Invalid Kind");
     return SourceRange();
   case N_Decl:
     return D->getSourceRange();