fix build

Author: sunnylqm

binding.gyp

@@ -12,11 +12,11 @@
         "HDiffPatch/libHDiffPatch/HDiff/private_diff/bytes_rle.cpp",
         "HDiffPatch/libHDiffPatch/HDiff/private_diff/suffix_string.cpp",
         "HDiffPatch/libHDiffPatch/HDiff/private_diff/compress_detect.cpp",
-        "HDiffPatch/libHDiffPatch/HDiff/private_diff/libdivsufsort/divsufsort64.cpp",
-        "HDiffPatch/libHDiffPatch/HDiff/private_diff/libdivsufsort/divsufsort.cpp",
+        "HDiffPatch/libHDiffPatch/HDiff/private_diff/libdivsufsort/divsufsort64.c",
+        "HDiffPatch/libHDiffPatch/HDiff/private_diff/libdivsufsort/divsufsort.c",
         "HDiffPatch/libHDiffPatch/HDiff/private_diff/limit_mem_diff/digest_matcher.cpp",
         "HDiffPatch/libHDiffPatch/HDiff/private_diff/limit_mem_diff/stream_serialize.cpp",
-        "HDiffPatch/libHDiffPatch/HDiff/private_diff/limit_mem_diff/adler_roll.cpp",
+        "HDiffPatch/libHDiffPatch/HDiff/private_diff/limit_mem_diff/adler_roll.c",
         "lzma/C/LzFind.c",
         "lzma/C/LzmaDec.c",
         "lzma/C/LzmaEnc.c",