Try to fix build.

diff --git a/src/lib/ffmpeg_content.cc b/src/lib/ffmpeg_content.cc
index 496dac8d8186b24d22cc0edc4a24c207086710c6..a52b53b04099251b8f84a7d1e9446f869c7ffc31 100644 (file)
--- a/src/lib/ffmpeg_content.cc
+++ b/src/lib/ffmpeg_content.cc
@@ -367,7 +367,7 @@ FFmpegContent::audio_analysis_path () const
 
        boost::filesystem::path p = AudioContent::audio_analysis_path ();
        if (audio_stream ()) {
-               p += "_" + audio_stream()->identifier ();
+               p = p.string() + "_" + audio_stream()->identifier ();
        }
        return p;
 }