loplugin:useuniqueptr in idlc::compileFile

Change-Id: I9f634466a084f8565aab4843f53702500014a133
Reviewed-on: https://gerrit.libreoffice.org/59772
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

idlc/source/idlccompile.cxx

@@ -314,8 +314,7 @@ sal_Int32 compileFile(const OString * pathname)
     oslProcessError procError = osl_Process_E_None;
 
     const int nCmdArgs = lCppArgs.size();
-    rtl_uString** pCmdArgs = nullptr;
-    pCmdArgs = static_cast<rtl_uString**>(rtl_allocateZeroMemory(nCmdArgs * sizeof(rtl_uString*)));
+    std::unique_ptr<rtl_uString*[]> pCmdArgs(new rtl_uString*[nCmdArgs]);
 
     int i = 0;
     for (auto const& elem : lCppArgs)
@@ -323,7 +322,7 @@ sal_Int32 compileFile(const OString * pathname)
         pCmdArgs[i++] = elem.pData;
     }
 
-    procError = osl_executeProcess( cpp.pData, pCmdArgs, nCmdArgs, osl_Process_WAIT,
+    procError = osl_executeProcess( cpp.pData, pCmdArgs.get(), nCmdArgs, osl_Process_WAIT,
                                     nullptr, startDir.pData, nullptr, 0, &hProcess );
 
     oslProcessInfo hInfo;
@@ -344,11 +343,9 @@ sal_Int32 compileFile(const OString * pathname)
                     pathname == nullptr ? "" : "file ", fileName.getStr());
 
         osl_freeProcessHandle(hProcess);
-        std::free(pCmdArgs);
         exit(hInfo.Code ? hInfo.Code : 99);
     }
     osl_freeProcessHandle(hProcess);
-    std::free(pCmdArgs);
 
     if (unlink(tmpFile.getStr()) != 0)
     {