fix coredump bug: caused by publish stream that codec is unsupport, sush as G.711, H.263

[duiniuluantanqin]

No description provided.

[duiniuluantanqin]

Similar issue:
Make sure to maintain the markdown structure.
see #1506 (comment)

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[codecov-commenter]

Codecov Report

Merging #2526 (c0aed88) into develop (29dea37) will decrease coverage by 0.00%.
The diff coverage is 20.00%.

@@             Coverage Diff             @@
##           develop    #2526      +/-   ##
===========================================
- Coverage    42.37%   42.36%   -0.01%     
===========================================
  Files          103      103              
  Lines        36421    36431      +10     
===========================================
+ Hits         15432    15434       +2     
- Misses       20989    20997       +8     

| Impacted Files | Coverage Δ | |'

Translated to English while maintaining the markdown structure:

'| Impacted Files | Coverage Δ | |
|---|---|---|
| trunk/src/app/srs_app_dash.cpp | 0.00% <0.00%> (ø) | |'

Translated to English while maintaining the markdown structure:

| trunk/src/app/srs_app_dash.cpp | 0.00% <0.00%> (ø) | |
| trunk/src/app/srs_app_source.cpp | 0.66% <0.00%> (-0.01%) | ⬇️ |
| trunk/src/kernel/srs_kernel_ts.cpp | 82.89% <50.00%> (-0.10%) | ⬇️ |

---

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| Δ = absolute <relative> (impact), ø = not affected, ? = missing data |

Translated to English while maintaining the markdown structure:

| Δ = absolute <relative> (impact), ø = not affected, ? = missing data |

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