Fixed compilation on Linux

This was SVN commit r4719.

source/lib/tests/test_lib.h

@@ -2,14 +2,6 @@
 
 #include "lib/lib.h"
 
-extern "C"
-int
-__stdcall
-MessageBoxA(
-			void*,
-			const char*,const char*,
-			unsigned int);
-
 class TestLib : public CxxTest::TestSuite 
 {
 public:

source/ps/DllLoader.cpp

@@ -14,7 +14,7 @@ void* const HANDLE_UNAVAILABLE = (void*)-1;
 // note: on Linux, lib is prepended to the SO file name and we need to add ./
 // to make dlopen look in the current working directory
 #if OS_UNIX
-static const char* prefix = "./lib"
+static const char* prefix = "./lib";
 #else
 static const char* prefix = "";
 #endif