Fix typo (extraneous semicolon) in fd.c patch to avoid excess seeks.

Now it skips useless SEEK_CUR 0 calls too, as intended.

src/backend/storage/file/fd.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/file/fd.c,v 1.61 2000/06/15 04:10:00 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/storage/file/fd.c,v 1.62 2000/07/05 21:10:05 tgl Exp $
  *
  * NOTES:
  *
@@ -809,11 +809,13 @@ FileWrite(File file, char *buffer, int amount)
 
 	FileAccess(file);
 	returnCode = write(VfdCache[file].fd, buffer, amount);
-	if (returnCode > 0) {
+	if (returnCode > 0)
+	{
 		VfdCache[file].seekPos += returnCode;
 		/* mark the file as needing fsync */
 		VfdCache[file].fdstate |= FD_DIRTY;
-	} else
+	}
+	else
 		VfdCache[file].seekPos = FileUnknownPos;
 
 	return returnCode;
@@ -832,6 +834,8 @@ FileSeek(File file, long offset, int whence)
 		switch (whence)
 		{
 			case SEEK_SET:
+				if (offset < 0)
+					elog(ERROR, "FileSeek: invalid offset: %ld", offset);
 				VfdCache[file].seekPos = offset;
 				break;
 			case SEEK_CUR:
@@ -845,8 +849,11 @@ FileSeek(File file, long offset, int whence)
 				elog(ERROR, "FileSeek: invalid whence: %d", whence);
 				break;
 		}
-	} else
-		switch (whence) {
+	}
+	else
+	{
+		switch (whence)
+		{
 			case SEEK_SET:
 				if (offset < 0)
 					elog(ERROR, "FileSeek: invalid offset: %ld", offset);
@@ -854,7 +861,7 @@ FileSeek(File file, long offset, int whence)
 					VfdCache[file].seekPos = lseek(VfdCache[file].fd, offset, whence);
 				break;
 			case SEEK_CUR:
-				if ((offset != 0) || (VfdCache[file].seekPos == FileUnknownPos));
+				if (offset != 0 || VfdCache[file].seekPos == FileUnknownPos)
 					VfdCache[file].seekPos = lseek(VfdCache[file].fd, offset, whence);
 				break;
 			case SEEK_END:
@@ -864,6 +871,7 @@ FileSeek(File file, long offset, int whence)
 				elog(ERROR, "FileSeek: invalid whence: %d", whence);
 				break;
 		}
+	}
 	return VfdCache[file].seekPos;
 }