uci: auto-load package in `ctx.foreach()` and `ctx.get_first()`

Functions that use `uci_lookup_ptr()` internally, such as `ctx.get()`,
`ctx.set()` or `ctx.delete()`, implicitly load the given configuration
name while the higher level functions `ctx.foreach()` or `ctx.get_first()`
do not.

This behaviour violates the principle of least surprise and might lead to
non-deterministic program behavior as the outcome of these functions
depends on prior uci operations performed on the cursor.

Fix this issue by invoking `uci_load()` internally in case the given
uci package name cannot be found in the cursor's package cache.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

0 files changed, 0 insertions, 0 deletions