minor typos and styles

Actually, debian lintian told me that:

I: codecrypt: spelling-error-in-manpage
   usr/share/man/man1/ccr.1.gz overriden overridden

Isn't that cute?

man/ccr.1

@@ -242,7 +242,7 @@ and applying flock(2) to it.
 
 For seeding the random number generator, Codecrypt uses data from "/dev/random"
 for generating keys and "/dev/urandom" for everything else, e.g. nonces or
-envelopes. Both cases can be overriden at once by specifying some other
+envelopes. Both cases can be overridden at once by specifying some other
 filename in environment variable CCR_RANDOM_SEED.
 
 .SH RETURN VALUE

src/iohelpers.cpp

@@ -83,7 +83,6 @@ std::string escape_output (const std::string&s)
 				r += "\\x";
 				r += hex[0xf & (s[i] >> 4)];
 				r += hex[0xf & s[i]];
-			}
+			} else r += s[i];
-		else r += s[i];
 	return r;
 }

src/mce_qcmdpc.cpp

@@ -289,7 +289,7 @@ int privkey::decrypt (const bvector & in_orig, bvector & out, bvector & errors)
 						unsigned&
 						ref = unsat
 						      [b2 * bs
-						       + (hpos + bs - h2) % bs];
+						          + (hpos + bs - h2) % bs];
 						if (increase) ++ref;
 						else --ref;
 					}