[vulkan] Fix broken line drawing

Line drawing was broken with the 2d depth pass (which will go away in
the end, but I like the organization of the draw code).

libs/video/renderer/Makemodule.am

@@ -449,6 +449,8 @@ vkshader_c = \
 	$(sprite_gbuff_c) \
 	$(sprite_depthv_c) \
 	$(sprite_depthf_c) \
+	$(twodv_c) \
+	$(twodf_c) \
 	$(twod_depthf_c) \
 	$(quakebspv_c) \
 	$(quakebspf_c) \

libs/video/renderer/vulkan/vulkan_draw.c

@@ -1292,6 +1292,8 @@ draw_lines (qfv_renderframe_t *rFrame, VkCommandBuffer cmd)
 	VkPipelineLayout layout = dctx->layout;
 	dfunc->vkCmdBindDescriptorSets (cmd, VK_PIPELINE_BIND_POINT_GRAPHICS,
 									layout, 0, 1, set, 0, 0);
+	dfunc->vkCmdDraw (cmd, dframe->line_verts.count * VERTS_PER_LINE,
+					  1, 0, 0);
 }
 
 void