Fix wiregrid_encoder irig

[ykyohei]

Satp3 configured irig for wiregrid encoder, irig was not configured for wiregrids at site before. This PR fixes several bugs we found.

Description

• Fix typo in irig time conversion
• Add missing timestamp in rough irig data.
• Fix irig_fdata. 'quadrature', 'pru_clock', 'reference_degree', 'error' are encoder data not irig data.

Currently encoder shows errors like this
In this state, wiregrid encoder agent induces memory leak. This PR may also improve this.

2025-04-06T20:15:17+0000 Invalid IRIG-B timestamp: 25 96 20 15 16
2025-04-06T20:15:17+0000 Invalid IRIG-B timestamp: 25 96 20 15 15
2025-04-06T20:15:17+0000 Invalid IRIG-B timestamp: 25 96 20 15 14
2025-04-06T20:15:16+0000 while calling from thread
2025-04-06T20:15:16+0000 while calling from thread
2025-04-06T20:15:15+0000 while calling from thread
2025-04-06T20:15:14+0000 while calling from thread
2025-04-06T20:15:14+0000 while calling from thread
2025-04-06T20:15:14+0000 while calling from thread
2025-04-06T20:15:14+0000 while calling from thread
2025-04-06T20:15:14+0000 while calling from thread
2025-04-06T20:15:14+0000 Invalid IRIG-B timestamp: 25 96 20 15 13
2025-04-06T20:15:14+0000 Invalid IRIG-B timestamp: 25 96 20 15 12
2025-04-06T20:15:14+0000 Invalid IRIG-B timestamp: 25 96 20 15 11

Motivation and Context

These fixes are necessary to properly acquire irig info.

How Has This Been Tested?

tested at daq-dev for satp3

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[sadachi5]

Thanks for your modification.
Just for my understanding, could you let me know what was the reason of the memory leak?

[ykyohei]

I actually do not understand the cause of memory leak and not sure if this resolves it.

[BrianJKoopman]

Looks good, thanks!