[skip ci] Add UPGRADING.INTERNALS entry for EXIT opcode

Girgias · Girgias · commit ac3cdf54df5f · 2024-08-18T19:47:34.000+02:00
diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
@@ -370,6 +370,8 @@ PHP 8.4 INTERNALS UPGRADE NOTES
 
 * YIELD and YIELD_FROM do not increment the opline anymore.
 
+* The EXIT opcode has been removed as exit is now implemented as a function.
+
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 5. SAPI changes
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