incidentd: Add missing va_end()

A recently added va_start() was missed its va_end().  We fix this.

Test: TreeHugger
Change-Id: I774da07096bee33bd91b78d734e8de946c87a87f

cmds/incidentd/src/Section.cpp

@@ -495,6 +495,7 @@ LogSection::LogSection(int id, const char* logID, ...) : WorkerThreadSection(id)
         name += " ";
         name += arg;
     }
+    va_end(args);
 
     switch (mLogID) {
         case LOG_ID_EVENTS: