Add forgotten underscore

llvm-svn: 233534
diff --git a/polly/lib/Analysis/ScopInfo.cpp b/polly/lib/Analysis/ScopInfo.cpp
index a8c7491..d7b67d8 100644
--- a/polly/lib/Analysis/ScopInfo.cpp
+++ b/polly/lib/Analysis/ScopInfo.cpp
@@ -1193,7 +1193,7 @@
 
 __isl_give isl_set *ScopStmt::getDomain() const { return isl_set_copy(Domain); }
 
-_isl_give isl_space *ScopStmt::getDomainSpace() const {
+__isl_give isl_space *ScopStmt::getDomainSpace() const {
   return isl_set_get_space(Domain);
 }