(sbrk): Shrink heap by arbitrary amounts.
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@@ -128,8 +128,6 @@ sbrk (unsigned long increment)
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size = -size;
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/* Sanity checks. */
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if (size % get_page_size () != 0)
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return NULL;
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if ((data_region_end - size) < data_region_base)
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return NULL;
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