gh-146388: Add null check for sym_new(ctx) in make_bottom

Misc/NEWS.d/next/Core_and_Builtins/2026-03-26-11-18-45.gh-issue-146388.O0u1c3.rst

@@ -0,0 +1 @@
+Adds a null check to handle when the JIT optimizer runs out of space when dealing with contradictions in ``make_bottom``.

Python/optimizer_symbols.c

@@ -1684,6 +1684,9 @@ static JitOptSymbol *
 make_bottom(JitOptContext *ctx)
 {
     JitOptSymbol *sym = sym_new(ctx);
+    if (sym == NULL) {
+        return out_of_space(ctx);
+    }
     sym->tag = JIT_SYM_BOTTOM_TAG;
     return sym;
 }