div by zero fix

[0xripleys]

No description provided.

[codecov-commenter]

Codecov Report

Merging #138 (9c99a83) into upcoming (8594030) will increase coverage by 2.80%.
The diff coverage is 96.04%.

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@@             Coverage Diff              @@
##           upcoming     #138      +/-   ##
============================================
+ Coverage     79.12%   81.92%   +2.80%     
============================================
  Files            36       44       +8     
  Lines          9006    15000    +5994     
============================================
+ Hits           7126    12289    +5163     
- Misses         1880     2711     +831     

Impacted Files	Coverage Δ
token-lending/cli/src/main.rs	0.05% <0.00%> (-0.08%)	⬇️
token-lending/program/tests/helpers/genesis.rs	0.00% <0.00%> (ø)
token-lending/sdk/src/error.rs	23.07% <ø> (ø)
token-lending/sdk/src/state/mod.rs	92.30% <ø> (ø)
...lending/program/tests/deposit_reserve_liquidity.rs	95.61% <95.37%> (-4.39%)	⬇️
...lending/program/tests/redeem_reserve_collateral.rs	96.33% <96.11%> (-1.89%)	⬇️
token-lending/sdk/src/state/rate_limiter.rs	96.47% <96.47%> (ø)
...nding/program/tests/helpers/solend_program_test.rs	96.96% <96.96%> (ø)
token-lending/sdk/src/oracles.rs	99.45% <97.05%> (+2.90%)	⬆️
token-lending/program/src/processor.rs	80.61% <97.24%> (+8.61%)	⬆️
... and 28 more

... and 5 files with indirect coverage changes

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