check: make any failure fatal

Previously, only the last error code was returned.
Using `set -e` makes the script quit on any unhandled error.

Signed-off-by: Eric Engestrom <eric@engestrom.ch>

src/egl/egl-entrypoint-check

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -e
 
 entrypoints=$(grep EGL_ENTRYPOINT "$srcdir"/main/eglentrypoint.h)
 sorted=$(sort <<< "$entrypoints")

src/glx/tests/dispatch-index-check

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -e
 
 # extract enum definition
 dispatch_list=$(sed '/__GLXdispatchIndex/,/__GLXdispatchIndex/!d' \