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fix getline line length handling #104

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fix getline line length handling #104

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getline writes the new buffer size to the size_t pointer. This new buffer size may be larger than the characters that were actually read which can lead to uninitialized memory being accessed. The return value contains the actual line length.

@sertonix
fix getline line length handling
67f0a5d 
getline writes the new buffer size to the size_t pointer. This new buffer
size may be larger than the characters that were actually read which can
lead to uninitialized memory being accessed. The return value contains
the actual line length.
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