Rust rz-pipe shouldn't panic

As a library, rz-pipe should not panic user's process.

All uses of unwrap and expect should be removed. Use error instead.

Line 216 in 76e7b67

sout.read_exact(&mut w).unwrap();

Lines 265 to 272 in 76e7b67

    
           let mut rz = RzPipe::spawn(name, opt).unwrap(); 
        
           loop { 
        
               let cmd: String = hrx.recv().unwrap(); 
        
               if cmd == "q" { 
        
                   break; 
        
               } 
        
               let res = rz.cmdj(&cmd).unwrap().to_string(); 
        
               htx.send(res.clone()).unwrap();

rz-pipe/rust/src/rzpipe.rs

Lines 332 to 337 in 76e7b67

    
           pub fn cmd(&mut self, cmd: &str) -> Result<String, String> { 
        
               self.write.write_all(cmd.as_bytes()).unwrap(); 
        
               let mut res: Vec<u8> = Vec::new(); 
        
               self.read.read_until(0u8, &mut res).unwrap(); 
        
               process_result(res) 
        
           }

rz-pipe/rust/src/rzpipe.rs

Line 354 in 76e7b67

let res = reqwest::get(&url).unwrap();

rz-pipe/rust/src/rz.rs

Line 21 in 76e7b67

Rz::new::<&str>(None).expect("Unable to spawn rizin or find an open rzpipe")

Pls review @XVilka / @spacemeowx2 and pardon my rust n00bness lel

@spacemeowx2 does this still happen?

	let mut rz = RzPipe::spawn(name, opt).unwrap();
	loop {
	let cmd: String = hrx.recv().unwrap();
	if cmd == "q" {
	break;
	}
	let res = rz.cmdj(&cmd).unwrap().to_string();
	htx.send(res.clone()).unwrap();

	pub fn cmd(&mut self, cmd: &str) -> Result<String, String> {
	self.write.write_all(cmd.as_bytes()).unwrap();
	let mut res: Vec<u8> = Vec::new();
	self.read.read_until(0u8, &mut res).unwrap();
	process_result(res)
	}