Fix a memory deallocation error that was crashing q2dm.

Also fix a bunch of compile warnings by changing "char *" to "const char *".
diff --git a/emulator/qtools/profile_pid.cpp b/emulator/qtools/profile_pid.cpp
index aa37847..589abe9 100644
--- a/emulator/qtools/profile_pid.cpp
+++ b/emulator/qtools/profile_pid.cpp
@@ -76,7 +76,7 @@
     sum_time += pstate->cpu_time;
     double per = 100.0 * pstate->cpu_time / total_time;
     double sum_per = 100.0 * sum_time / total_time;
-    char *print_flags = "";
+    const char *print_flags = "";
     if ((pstate->flags & ProcessState::kCalledExec) == 0)
       print_flags = "T";
     if (pstate->name == NULL)