bugfix: begin failed not release channel and throw exception

[slievrly]

Signed-off-by: slievrly slievrly@163.com

Ⅰ. Describe what this PR did

bugfix: begin failed not release channel and throw exception

Ⅱ. Does this pull request fix one issue?

fix #1349

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1370 into develop will increase coverage by 0.13%.
The diff coverage is 33.33%.

@@              Coverage Diff              @@
##             develop    #1370      +/-   ##
=============================================
+ Coverage      45.83%   45.96%   +0.13%     
  Complexity      1695     1695              
=============================================
  Files            345      345              
  Lines          12486    12485       -1     
  Branches        1570     1596      +26     
=============================================
+ Hits            5723     5739      +16     
+ Misses          6094     6092       -2     
+ Partials         669      654      -15

Impacted Files	Coverage Δ	Complexity Δ
...eata/core/rpc/netty/AbstractRpcRemotingClient.java	18.91% <ø> (+0.49%)	6 <0> (ø)	⬇️
...in/java/io/seata/tm/DefaultTransactionManager.java	4.34% <0%> (-0.42%)	1 <0> (ø)
...seata/core/exception/TransactionExceptionCode.java	82.14% <100%> (+0.66%)	2 <0> (ø)	⬇️
...rotobuf/convertor/RegisterTMResponseConvertor.java	84.84% <0%> (+3.03%)	3% <0%> (ø)	⬇️
...rotobuf/convertor/RegisterRMResponseConvertor.java	84.84% <0%> (+3.03%)	3% <0%> (ø)	⬇️
...otobuf/convertor/GlobalBeginResponseConvertor.java	96.96% <0%> (+3.03%)	3% <0%> (ø)	⬇️
...obuf/convertor/BranchRollbackRequestConvertor.java	96.42% <0%> (+3.57%)	3% <0%> (ø)	⬇️
...otobuf/convertor/BranchCommitRequestConvertor.java	100% <0%> (+3.57%)	3% <0%> (ø)	⬇️
...otobuf/convertor/BranchReportRequestConvertor.java	96.29% <0%> (+3.7%)	3% <0%> (ø)	⬇️
...protobuf/convertor/RegisterRMRequestConvertor.java	95.83% <0%> (+4.16%)	3% <0%> (ø)	⬇️
... and 6 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update df59704...17b13dc. Read the comment docs.

[xingfudeshi]

LGTM.

[VainEffort]

LGTM