Fix for the occasional "Remote host closed connection" exception whil…

…e looking at files in the file browser.

Seems to happen more when running in XCode than when running by itself. This randomly causes the contents view to be empty or the files to not be shown when clicking a discloser triangle.

EINTR errors are recoverable, just need to read() again.

NSFileHandleExt.m

@@ -36,8 +36,14 @@ -(NSString*)readLine {
 	while (n > 0) {
 		n = read(fd, buffer + bytesReceived++, 1);
 
-		if (n < 0)
-			[[NSException exceptionWithName:@"Socket error" reason:@"Remote host closed connection" userInfo:nil] raise];
+		if (n < 0) {
+            if (errno == EINTR) {
+                n = 1;
+                bytesReceived--;
+            } else {
+                [[NSException exceptionWithName:@"Socket error" reason:@"Remote host closed connection" userInfo:nil] raise];
+            }
+        }
 
 		if (bytesReceived >= bufferSize) {
 			// Make buffer bigger