setup: fix "control reaches end of non-void function" compiler warning

Actually, it is impossible to reach the end of these two functions
without return()ing earlier from one of the switch() statements'
branches. But since the compiler cannot know this and warns about it,
and since this warning can be escalated into an error in later
compiler versions, silence it by return()ing a dummy value at the end
of each function.

Fixes #508

1 files changed, 4 insertions, 0 deletions

diff --git a/src/setup/txt_joyaxis.c b/src/setup/txt_joyaxis.c
index 4747a4ff..5e59b9f7 100644
--- a/src/setup/txt_joyaxis.c
+++ b/src/setup/txt_joyaxis.c
@@ -63,6 +63,8 @@ static char *CalibrationLabel(txt_joystick_axis_t *joystick_axis)
                        "right, and press the button.";
             }
     }
+
+    return NULL;
 }
 
 static void SetCalibrationLabel(txt_joystick_axis_t *joystick_axis)
@@ -265,6 +267,8 @@ static int NextCalibrateStage(txt_joystick_axis_t *joystick_axis)
         case CONFIG_STAGE2:
             return CONFIG_CENTER;
     }
+
+    return -1;
 }
 
 static int EventCallback(SDL_Event *event, TXT_UNCAST_ARG(joystick_axis))