Fix data tooltip panic

Prevents panicing when attempting to display the data tooltip for a symbol that is too large by just using as many bytes as needed from the begging of the symbol.

objdiff-core/src/arch/mod.rs

@@ -34,9 +34,12 @@ pub enum DataType {
 
 impl DataType {
     pub fn display_bytes<Endian: ByteOrder>(&self, bytes: &[u8]) -> Option<String> {
-        if self.required_len().is_some_and(|l| bytes.len() < l) {
+        let Some(required_len) = self.required_len() else {
             return None;
-        }
+        };
+        // TODO: For symbols larger than their data type, we should probably support
+        // using the relocation's relative offset to read the bytes.
+        let bytes = bytes.get(0..required_len)?;
 
         match self {
             DataType::Int8 => {