Meego Harmattan buildfix.

data/compression.cpp

@@ -7,6 +7,7 @@
 #include <iostream>
 #include <iomanip>
 #include <sstream>
+#include <cstring>
 
 #include <zlib.h>
 
@@ -100,4 +101,4 @@ bool decompress_string(const std::string& str, std::string *dest) {
 	}
 
 	*dest = outstring;
-}
+}