Fix compiler warnings

src/modules/audio/openal/Source.cpp

@@ -389,7 +389,7 @@ namespace openal
 
 			for(unsigned int i = 0; i < MAX_BUFFERS; i++)
 			{
-				int decoded = streamAtomic(buffers[i], decoder);
+				streamAtomic(buffers[i], decoder);
 				++usedBuffers;
 				if(decoder->isFinished())
 					break;

src/modules/filesystem/physfs/wrap_Filesystem.cpp

@@ -314,7 +314,7 @@ namespace physfs
 		std::string tokenized_name(filename);
 		std::string tokenized_function(filename);
 
-		for (int i = 0; i < tokenized_name.size(); i++)
+		for (unsigned int i = 0; i < tokenized_name.size(); i++)
 		{
 			if (tokenized_name[i] == '.')
 			{

src/modules/graphics/opengl/Font.cpp

@@ -104,11 +104,11 @@ namespace opengl
 		glTexSubImage2D(GL_TEXTURE_2D, 0, texture_x, texture_y, w, h, (type == FONT_TRUETYPE ? GL_LUMINANCE_ALPHA : GL_RGBA), GL_UNSIGNED_BYTE, gd->getData());
 		
 		Quad::Viewport v;
-		v.x = texture_x;
-		v.y = texture_y;
-		v.w = w;
-		v.h = h;
-		Quad * q = new Quad(v, TEXTURE_WIDTH, TEXTURE_HEIGHT);
+		v.x = (float) texture_x;
+		v.y = (float) texture_y;
+		v.w = (float) w;
+		v.h = (float) h;
+		Quad * q = new Quad(v, (const float) TEXTURE_WIDTH, (const float) TEXTURE_HEIGHT);
 		const vertex * verts = q->getVertices();
 		
 		glEnableClientState(GL_VERTEX_ARRAY);

src/modules/graphics/opengl/wrap_Quad.cpp

@@ -43,10 +43,10 @@ namespace opengl
 	{
 		Quad * quad = luax_checktype<Quad>(L, 1, "Quad", GRAPHICS_QUAD_T);
 		Quad::Viewport v;
-		v.x = luaL_checknumber(L, 2);
-		v.y = luaL_checknumber(L, 3);
-		v.w = luaL_checknumber(L, 4);
-		v.h = luaL_checknumber(L, 5);
+		v.x = (float) luaL_checknumber(L, 2);
+		v.y = (float) luaL_checknumber(L, 3);
+		v.w = (float) luaL_checknumber(L, 4);
+		v.h = (float) luaL_checknumber(L, 5);
 		quad->setViewport(v);
 		return 0;
 	}