mtk_pkg: fix mistake preventing extraction of unencrypted partitions

src/formats/mtk_pkg.rs

@@ -104,9 +104,11 @@ pub fn extract_mtk_pkg(mut file: &File, output_folder: &str) -> Result<(), Box<d
             continue
         }
 
+        let mut out_data;
+        if part_entry.is_encrypted() {
             let mut matching_key: Option<[u8; 16]> = None;
             let mut matching_iv: Option<[u8; 16]> = None;
-        if part_entry.is_encrypted() {
+
             let crypted_header = &data[..48];
 
             // try decrypting with vendor magic repeated 4 times (works for most)
@@ -135,9 +137,7 @@ pub fn extract_mtk_pkg(mut file: &File, output_folder: &str) -> Result<(), Box<d
                     }
                 }
             }
-        }
 
-        let mut out_data;
             if matching_key.is_some() && matching_iv.is_some() {
                 let (key_array, iv_array) = (matching_key.unwrap(), matching_iv.unwrap());
                 //data aligned to 16 bytes is AES encrypted. the remaining unaligned data is XORed with the key
@@ -147,11 +147,13 @@ pub fn extract_mtk_pkg(mut file: &File, output_folder: &str) -> Result<(), Box<d
                 for (i, &b) in xor_tail.iter().enumerate() {
                     out_data.push(b ^ key_array[i % key_array.len()]);
                 }
-
             } else {
                 println!("- Failed to decrypt data!");
                 continue
             }
+        } else {
+            out_data = data;
+        }
 
         //strip iMtK thing and get version
         let extra_header_len = if &out_data[48..52] == b"iMtK" {