Game crashes when i disconnect from server.

So i leave a server and my game crashes. Here is the report:

---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 4/23/15 6:49 PM
Description: Ticking screen

java.lang.NullPointerException: Ticking screen
	at ek$a.a(SourceFile:377)
	at ek.m(SourceFile:209)
	at ek.a(SourceFile:218)
	at bdg.a(SourceFile:239)
	at azh.e(SourceFile:114)
	at ave.s(SourceFile:1512)
	at ave.av(SourceFile:888)
	at ave.a(SourceFile:325)
	at net.minecraft.client.main.Main.main(SourceFile:124)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at ek$a.a(SourceFile:377)
	at ek.m(SourceFile:209)
	at ek.a(SourceFile:218)
	at bdg.a(SourceFile:239)
	at azh.e(SourceFile:114)

-- Affected screen --
Details:
	Screen name: azh
Stacktrace:
	at ave.s(SourceFile:1512)
	at ave.av(SourceFile:888)
	at ave.a(SourceFile:325)
	at net.minecraft.client.main.Main.main(SourceFile:124)

-- System Details --
Details:
	Minecraft Version: 1.8.4
	Operating System: Windows 8.1 (amd64) version 6.3
	CPU: 4x AMD A6-5200 APU with Radeon(TM) HD Graphics 
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 210031392 bytes (200 MB) / 316456960 bytes (301 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Launched Version: 1.8.4
	LWJGL: 2.9.4
	OpenGL: AMD Radeon HD 8400 GL version 4.2.12422 Compatibility Profile Context 13.152.1.3000, ATI Technologies Inc.
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: No
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (US)
	Profiler Position: N/A (disabled)