Issue with multiple paths in GOPATH

[margenton-dbg]

Issue Type: Bug

• Setup a GOPATH with multiple paths
• Install some go tooling (not sure how to trigger that)
• The error messages suggest that the module didn't detect the multiple paths in the GOPATH

Extension version: 0.6.91
VS Code version: Code - Insiders 1.28.0-insider (caaa5369cb4d22b7481e6ff97252cf92937709eb, 2018-09-28T05:18:20.266Z)
OS version: Windows_NT x64 10.0.17134

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6800K CPU @ 3.40GHz (12 x 3398)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled
Memory (System)	31.91GB (13.32GB free)
Process Argv	.
Screen Reader	no
VM	0%

[jrwren]

This is a duplicate of #1966

[ramya-rao-a]

Thanks @jrwren!

@margenton-dbg #1966 is tracking this issue and @jrwren's fix is available as described in
#1966 (comment)