Runtime crush at PostgresNumeric.init

[sidepelican]

Describe the bug

PostgresNumeric cannot decode large number (like 1234567890123) and it causes runtime crash.

To Reproduce

1. call this line

PostgresNumeric(string: "1234567890123")

2. crash!

Expected behavior

Can call initializer without crash.

Environment

• Vapor Framework version: 4.48.8
• postgres-nio: 1.6.2

Additional context

postgres-nio/Sources/PostgresNIO/Data/PostgresData+Numeric.swift

Line 270 in 046d3ba

func reverseChunked(by maxSize: Int) -> [SubSequence] {

this function does not work correctly and return values over maxSize.

let uuu = "1234567890123"
print(uuu.reverseChunked(by: 4)) // ["1", "2345", "67890", "123"]

then here, Int16(67890)! causes crash.

postgres-nio/Sources/PostgresNIO/Data/PostgresData+Numeric.swift

Lines 91 to 95 in 046d3ba

	for chunk in integer.reverseChunked(by: 4) {
	weight += 1
	// convert the 4 digits to an Int16
	buffer.writeInteger(Int16(chunk)!, endianness: .big)
	}