Fix leak in ServiceListeners.cpp

[achristoforides]

Signed-off-by: The MathWorks, Inc. alchrist@mathworks.com

[codecov-commenter]

Codecov Report

Merging #639 (d1da9c3) into development (8204c4f) will increase coverage by 0.08%.
The diff coverage is 100.00%.

@@               Coverage Diff               @@
##           development     #639      +/-   ##
===============================================
+ Coverage        90.41%   90.49%   +0.08%     
===============================================
  Files              248      250       +2     
  Lines            13280    13449     +169     
===============================================
+ Hits             12007    12171     +164     
- Misses            1273     1278       +5     

Impacted Files	Coverage Δ
framework/src/service/ServiceListeners.cpp	100.00% <100.00%> (+1.26%)	⬆️
...rvicecomponent/runtime/dto/ServiceReferenceDTO.hpp	0.00% <0.00%> (-100.00%)	⬇️
...icecomponent/runtime/dto/SatisfiedReferenceDTO.hpp	0.00% <0.00%> (-100.00%)	⬇️
...ecomponent/runtime/dto/UnsatisfiedReferenceDTO.hpp	0.00% <0.00%> (-100.00%)	⬇️
...omponent/runtime/dto/ComponentConfigurationDTO.hpp	0.00% <0.00%> (-100.00%)	⬇️
...rationAdmin/src/metadata/ConfigurationMetadata.hpp	75.00% <0.00%> (-25.00%)	⬇️
...arativeServices/src/metadata/ComponentMetadata.hpp	87.50% <0.00%> (-12.50%)	⬇️
...nfigurationAdmin/src/ConfigurationAdminPrivate.hpp	80.00% <0.00%> (-11.67%)	⬇️
...eclarativeServices/src/manager/ConcurrencyUtil.hpp	92.85% <0.00%> (-7.15%)	⬇️
framework/include/cppmicroservices/AnyMap.h	68.18% <0.00%> (-6.82%)	⬇️
... and 43 more