[birt-dev] CheckIn: Bugzilla#164579 - [Regression]Meter chart with null

["Yulin Wang" <yulin.wang@xxxxxxxxxxx>]

- Summary:
[Regression]Meter chart with null values does not work correctly [0001]

- Bugzilla Bug (s) Resolved:
#164579

- Description:
Fix it by ignoring the null numbers when computing the range.
Checked into both Head and 2.1.2 branch
(Reviewed by Yueqian Wang)

- Tests Description: Manual Test

- Notes to Build Team: N/A

- Notes to Developers: N/A

- Notes to QA: N/A

- Notes to Documentation: N/A

- Files Edited:
/org.eclipse.birt.chart.engine.extension/src/org/eclipse/birt/chart/render/DialRenderer.java

- Files Added:

- Files Deleted