Merge pull request #5861 from Icinga/fix/invalid-memory-access

Fix incorrect memory access

diff --cc lib/base/application.cpp
index 790eae905f363c66c8c524ec12c14cc3ac942821,87f0ca8b136b75095b6c1a96d00491fbb6684ee1..785d8c0b0d614bae0b96a6b3c406d3f7e6ca9fa4
--- 1/lib/base/application.cpp
--- 2/lib/base/application.cpp
+++ b/lib/base/application.cpp
@@@ -632,9 -632,12 +632,12 @@@ void Application::AttachDebugger(const 
                                "gdb",
                                "-p",
                                my_pid_str,
 -                              NULL
 +                              nullptr
                        };
+ 
                        argv = const_cast<char **>(uargv);
+ 
+                       (void) execvp(argv[0], argv);
                } else {
                        const char *uargv[] = {
                                "gdb",
@@@ -647,12 -650,14 +650,14 @@@
                                "detach",
                                "-ex",
                                "quit",
 -                              NULL
 +                              nullptr
                        };
+ 
                        argv = const_cast<char **>(uargv);
+ 
+                       (void) execvp(argv[0], argv);
                }
  
-               (void)execvp(argv[0], argv);
                perror("Failed to launch GDB");
                free(my_pid_str);
                _exit(0);