Pass a StringRef to sys::identifyFileType.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183669 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Archive/Archive.cpp b/lib/Archive/Archive.cpp
index 1f36a00..2b92d0ff 100644
--- a/lib/Archive/Archive.cpp
+++ b/lib/Archive/Archive.cpp
@@ -129,7 +129,7 @@
   }
 
   // Determine what kind of file it is.
-  switch (sys::IdentifyFileType(signature,4)) {
+  switch (sys::identifyFileType(StringRef(signature, 4))) {
     case sys::Bitcode_FileType:
       flags |= BitcodeFlag;
       break;
diff --git a/lib/Archive/ArchiveReader.cpp b/lib/Archive/ArchiveReader.cpp
index 14713e6..6550599 100644
--- a/lib/Archive/ArchiveReader.cpp
+++ b/lib/Archive/ArchiveReader.cpp
@@ -205,7 +205,7 @@
   }
 
   // Determine if this is a bitcode file
-  switch (sys::IdentifyFileType(At, 4)) {
+  switch (sys::identifyFileType(StringRef(At, 4))) {
     case sys::Bitcode_FileType:
       flags |= ArchiveMember::BitcodeFlag;
       break;