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Check response from doHTTPGet()

Joshua Hürzeler requested to merge github/fork/RichieB2B/doHTTPGet_nil_pointer into master

Created by: RichieB2B

The response from doHTTPGet() needs to be checked before using it. Otherwise this can occur:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x40 pc=0x70cc11]

goroutine 58627 [running]:
github.com/exzz/netatmo-api-go.processHTTPResponse(0x0, 0xa06d00, 0xc000468030, 0x8d3820, 0xc0004f6d80, 0x0, 0x0)
        /go/pkg/mod/github.com/exzz/netatmo-api-go@v0.0.0-20171026152754-41589231f446/weather.go:176 +0x41
github.com/exzz/netatmo-api-go.(*Client).Read(0xc0004f6d60, 0x5fbc6114, 0x245cb11f, 0x312f8772ba9ba6)
        /go/pkg/mod/github.com/exzz/netatmo-api-go@v0.0.0-20171026152754-41589231f446/weather.go:204 +0x16a

Please check my syntax. I am not a Go programmer.

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