[lldb] Remove redundant c_str() calls in stream output (NFC) (#94839)
Passing the result of c_str() to a stream is slow and redundant. This
change removes unnecessary c_str() calls and uses the string object
directly.
Caught by cppcheck -
lldb/tools/debugserver/source/JSON.cpp:398:19: performance: Passing the
result of c_str() to a stream is slow and redundant. [stlcstrStream]
lldb/tools/debugserver/source/JSON.cpp:408:64: performance: Passing the
result of c_str() to a stream is slow and redundant. [stlcstrStream]
lldb/tools/debugserver/source/JSON.cpp:420:54: performance: Passing the
result of c_str() to a stream is slow and redundant. [stlcstrStream]
lldb/tools/debugserver/source/JSON.cpp:46:13: performance: Passing the
result of c_str() to a stream is slow and redundant. [stlcstrStream]
Fix #91212