llava-cli : don't crash if --image flag is invalid (#4835)

This change fixes an issue where supplying `--image missing-file` would
result in a segfault due to a null pointer being dereferenced. This can
result in distracting info being printed if robust crash analysis tools
are being used.

diff --git a/examples/llava/llava-cli.cpp b/examples/llava/llava-cli.cpp
index 502b788b14aba2f70e51348c86d2eb28105aff1a..d94795fe317d478efa8582365281e01b4ace6668 100644 (file)
--- a/examples/llava/llava-cli.cpp
+++ b/examples/llava/llava-cli.cpp
@@ -243,6 +243,9 @@ int main(int argc, char ** argv) {
     }
 
     auto image_embed = load_image(ctx_llava, &params);
+    if (!image_embed) {
+        return 1;
+    }
 
     // process the prompt
     process_prompt(ctx_llava, image_embed, &params, params.prompt);