hotfix operator type

Author: golangis

src/main/pt/up/fe/comp2023/ollir/Optimization.java

@@ -297,7 +297,7 @@ private Void dealWithComparison(JmmNode jmmNode, Void unused) {
         String right = rightSon.get("valueOl");
         temp = "t" + tempVarId++ + ".bool";
 
-        code += temp + ":=.bool " + left + " " + jmmNode.get("op") + ".i32 " + right;
+        code += temp + ":=.bool " + left + " " + jmmNode.get("op") + ".bool " + right;
         if (condition.isEmpty() || cycle.isEmpty())
             code += ";\n";
         jmmNode.put("valueOl", temp);