* Prevent Generator from swallowing exceptions caught on Buffer.array() (pull #504)

Author: egolearner

CHANGELOG.md

@@ -1,4 +1,5 @@
 
+ * Prevent `Generator` from swallowing exceptions caught on `Buffer.array()` ([pull #504](https://github.com/bytedeco/javacpp/pull/504))
  * Add `enum` classes missing from config files required by GraalVM Native Image
  * Let `Parser` annotate `&&` parameters with new `@ByRef(true)` value used by `Generator` to call `std::move()`
  * Fix `Parser` overlooking anonymous `class`, `struct` or `union` with comments after `}` ([issue #501](https://github.com/bytedeco/javacpp/issues/501))

src/main/java/org/bytedeco/javacpp/tools/Generator.java

@@ -2237,7 +2237,7 @@ void parametersBefore(MethodInformation methodInfo) {
                         out.println("        arr" + j + " = (j" + paramNameLowerCase + "Array)env->CallObjectMethod(arg" + j + ", JavaCPP_arrayMID);");
                         out.println("        offset" + j + " = env->CallIntMethod(arg" + j + ", JavaCPP_arrayOffsetMID);");
                         out.println("        if (env->ExceptionOccurred() != NULL) {");
-                        out.println("            env->ExceptionClear();");
+                        out.println("            return" + (methodInfo.returnType == void.class ? ";" : " 0;"));
                         out.println("        } else {");
                         if (methodInfo.criticalRegion) {
                             out.println("            ptr" + j + " = arr" + j + " == NULL ? NULL : (" + typeName[0] + typeName[1]