Bug 1751554 - wasm: Skip phi fixup when wasm-eh is not compiled in. r…

…=lth

Differential Revision: https://phabricator.services.mozilla.com/D136754

js/src/wasm/WasmIonCompile.cpp

@@ -2485,6 +2485,7 @@ class FunctionCompiler {
     // Pending jumps to an enclosing try-catch may reference the recycled phis.
     // We have to search above all enclosing try blocks, as a delegate may move
     // patches around.
+#ifdef ENABLE_WASM_EXCEPTIONS
     for (uint32_t depth = 0; depth < iter().controlStackDepth(); depth++) {
       if (iter().controlKind(depth) != LabelKind::Try) {
         continue;
@@ -2497,6 +2498,7 @@ class FunctionCompiler {
         }
       }
     }
+#endif
 
     // Discard redundant phis and add to the free list.
     for (MPhiIterator phi = loopEntry->phisBegin();