Document ESP.getMaxFreeBlockSize() != max malloc size #7328
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Fixes esp8266#7322. Because of UMM internals, the largest `malloc()`able block will be smaller than the largest contiguous free RAM block. Note in the docs.
devyte approved these changes May 26, 2020
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Fixes #7322. Because of UMM internals, the largest
malloc()able blockwill be smaller than the largest contiguous free RAM block. Note in the docs.