Commits on Aug 10, 2020

1. Prevent nil pointer dereference in dashboard import …

   When importing a dashboard with a template variable with no prefix, the
   provider panics with the following error message:
   
   ```
   panic: runtime error: invalid memory address or nil pointer dereference
   2020-08-10T13:42:16.345+0200 [DEBUG] plugin.terraform-provider-datadog_v2.12.1: [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1bddcf1]
   2020-08-10T13:42:16.345+0200 [DEBUG] plugin.terraform-provider-datadog_v2.12.1:
   2020-08-10T13:42:16.345+0200 [DEBUG] plugin.terraform-provider-datadog_v2.12.1: goroutine 81 [running]:                                                                                                     2020-08-10T13:42:16.345+0200 [DEBUG] plugin.terraform-provider-datadog_v2.12.1: github.com/terraform-providers/terraform-provider-datadog/datadog.buildTerraformTemplateVariables(0xc0004a1a18, 0x1fa2ab9)
   2020-08-10T13:42:16.345+0200 [DEBUG] plugin.terraform-provider-datadog_v2.12.1:         github.com/terraform-providers/terraform-provider-datadog/datadog/resource_datadog_dashboard.go:296 +0x291
   ```
   
   This commit prevents by first checking if the pointer that we're going
   to dereference is nil. If that's the case, we assume that the template
   variable doesn't have a name, prefix or default, as appropriate.

   

   juliogreff committed Aug 10, 2020
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