Update app.cpp

Author: Izgip

src/ui/app.cpp

@@ -402,7 +402,11 @@ void App::open_file(const char* path) {
         }
     } else if (magic == 0x464C457F) {
         result = elf_loader_.load(path);
-    } else {
+    } else if (magic == 0xFEEDFACE || magic == 0xFEEDFACF || 
+               magic == 0xCEFAEDFE || magic == 0xCFAFFEED) {
+        out_.log("Detected Mach-O binary (macOS)");
+        result = macho_loader_.load(path);
+    } else
         out_.log("ERROR: unsupported file format (expected PE or ELF)");
         return;
     }