Report of the static analyzer:
1. NULL_AFTER_DEREF Pointer 'str', which is dereferenced at
image-host.c:688 by calling function 'strdup', is compared to a NULL
value at image-host.c:691.
2. NULL_AFTER_DEREF Pointer 'list', which is dereferenced at
image-host.c:689, is compared to a NULL value at image-host.c:691.
Corrections explained:
1. Checking for NULL before using pointers: The if (!list || !str) check
is now performed before calling strdup and realloc, which prevents
null pointer dereferences.
2. Checking the result of strdup: strdup can return NULL if memory
allocation fails. This also needs to be checked.
3. Checking the result of realloc: If realloc returns NULL, then memory
has not been allocated and dup must be freed to avoid memory leaks.
Triggers found by static analyzer Svace.
Signed-off-by: Anton Moryakov <ant.v.moryakov@gmail.com>
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