[lldb] Fix compile failure on SymbolFileDWARFTests.cpp with gcc

We need to explicitly specify template argument for llvm::ArrayRef when building with gcc.

Author: ZequanWu

lldb/unittests/SymbolFile/DWARF/SymbolFileDWARFTests.cpp

@@ -92,7 +92,7 @@ TEST_F(SymbolFileDWARFTests, ParseArangesNonzeroSegmentSize) {
       // END TUPLES
       0, 0, 0, 0, 0, 0, 0, 0, 0 // terminator
   };
-  llvm::DWARFDataExtractor data(llvm::ArrayRef(binary_data),
+  llvm::DWARFDataExtractor data(llvm::ArrayRef<unsigned char>(binary_data),
                                 /*isLittleEndian=*/false, /*AddrSize=*/4);
 
   DWARFDebugArangeSet debug_aranges;