Add stdio header for linux builds

Currently cmake builds on linux fail without those headers. This
commit fixes that.

src/Platform_unix.cpp

@@ -27,7 +27,7 @@
 #include <string.h>
 #include <sys/resource.h>
 #include <uv.h>
-
+#include <stdio.h>
 
 #include "Platform.h"
 #include "version.h"

src/log/ConsoleLog.cpp

@@ -35,7 +35,7 @@
 
 #include "log/ConsoleLog.h"
 #include "log/Log.h"
-
+#include <stdio.h>
 
 ConsoleLog::ConsoleLog(bool colors) :
     m_colors(colors)

src/log/FileLog.cpp

@@ -26,7 +26,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
-
+#include <stdio.h>
 
 #include "log/FileLog.h"