Reorder pseudocode sections

draft-ietf-quic-transport.md

@@ -7479,6 +7479,36 @@ intended to be correct and clear, rather than being optimally performant.
 The pseudocode segments in this section are licensed as Code Components; see the
 copyright notice.
 
+
+## Sample Variable-Length Integer Decoding {#sample-varint}
+
+The pseudocode in {{alg-varint}} shows how a variable-length integer can be
+read from a stream of bytes.  The function ReadVarint takes a single argument, a
+sequence of bytes which can be read in network byte order.
+
+~~~
+ReadVarint(data):
+  // The length of variable-length integers is encoded in the
+  // first two bits of the first byte.
+  v = data.next_byte()
+  prefix = v >> 6
+  length = 1 << prefix
+
+  // Once the length is known, remove these bits and read any
+  // remaining bytes.
+  v = v & 0x3f
+  repeat length-1 times:
+    v = (v << 8) + data.next_byte()
+  return v
+~~~
+{: #alg-varint title="Sample Variable-Length Integer Decoding Algorithm"}
+
+For example, the eight-byte sequence 0xc2197c5eff14e88c decodes to the decimal
+value 151,288,809,941,952,652; the four-byte sequence 0x9d7f3e7d decodes to
+494,878,333; the two-byte sequence 0x7bbd decodes to 15,293; and the single byte
+0x25 decodes to 37 (as does the two-byte sequence 0x4025).
+
+
 ## Sample Packet Number Encoding Algorithm {#sample-packet-number-encoding}
 
 The pseudocode in {{alg-encode-pn}} shows how an implementation can select
@@ -7519,6 +7549,7 @@ In the same state, sending a packet with a number of 0xace8fe uses the 24-bit
 encoding, because at least 18 bits are required to represent twice the range
 (131,182 packets, or 0x2006e).
 
+
 ## Sample Packet Number Decoding Algorithm {#sample-packet-number-decoding}
 
 The pseudocode in {{alg-decode-pn}} includes an example algorithm for decoding
@@ -7605,34 +7636,6 @@ ECN to be disabled.  For those rare cases where marked packets are discarded by
 the path, the short duration of the testing period limits the number of losses
 incurred.
 
-## Sample Variable-Length Integer Decoding {#sample-varint}
-
-The pseudocode in {{alg-varint}} shows how a variable-length integer can be
-read from a stream of bytes.  The function ReadVarint takes a single argument, a
-sequence of bytes which can be read in network byte order.
-
-~~~
-ReadVarint(data):
-  // The length of variable-length integers is encoded in the
-  // first two bits of the first byte.
-  v = data.next_byte()
-  prefix = v >> 6
-  length = 1 << prefix
-
-  // Once the length is known, remove these bits and read any
-  // remaining bytes.
-  v = v & 0x3f
-  repeat length-1 times:
-    v = (v << 8) + data.next_byte()
-  return v
-~~~
-{: #alg-varint title="Sample Variable-Length Integer Decoding Algorithm"}
-
-For example, the eight-byte sequence 0xc2197c5eff14e88c decodes to the decimal
-value 151,288,809,941,952,652; the four-byte sequence 0x9d7f3e7d decodes to
-494,878,333; the two-byte sequence 0x7bbd decodes to 15,293; and the single byte
-0x25 decodes to 37 (as does the two-byte sequence 0x4025).
-
 
 # Change Log