Remove some unnecessary casts in format arguments

We can use %zd or %zu directly, no need to cast to int.  Conversely,
some code was casting away from int when it could be using %d
directly.

src/backend/access/spgist/spgutils.c

@@ -1240,8 +1240,8 @@ SpGistPageAddNewItem(SpGistState *state, Page page, Item item, Size size,
 					*startOffset = offnum + 1;
 			}
 			else
-				elog(PANIC, "failed to add item of size %u to SPGiST index page",
-					 (int) size);
+				elog(PANIC, "failed to add item of size %zu to SPGiST index page",
+					 size);
 
 			return offnum;
 		}
@@ -1252,8 +1252,8 @@ SpGistPageAddNewItem(SpGistState *state, Page page, Item item, Size size,
 						 InvalidOffsetNumber, false, false);
 
 	if (offnum == InvalidOffsetNumber && !errorOK)
-		elog(ERROR, "failed to add item of size %u to SPGiST index page",
-			 (int) size);
+		elog(ERROR, "failed to add item of size %zu to SPGiST index page",
+			 size);
 
 	return offnum;
 }

src/backend/access/transam/xlogutils.c

@@ -991,8 +991,8 @@ WALReadRaiseError(WALReadError *errinfo)
 	{
 		ereport(ERROR,
 				(errcode(ERRCODE_DATA_CORRUPTED),
-				 errmsg("could not read from log segment %s, offset %u: read %d of %zu",
+				 errmsg("could not read from log segment %s, offset %u: read %d of %d",
 						fname, errinfo->wre_off, errinfo->wre_read,
-						(Size) errinfo->wre_req)));
+						errinfo->wre_req)));
 	}
 }

src/backend/utils/adt/xml.c

@@ -959,8 +959,8 @@ pg_xml_init_library(void)
 		if (sizeof(char) != sizeof(xmlChar))
 			ereport(ERROR,
 					(errmsg("could not initialize XML library"),
-					 errdetail("libxml2 has incompatible char type: sizeof(char)=%u, sizeof(xmlChar)=%u.",
-							   (int) sizeof(char), (int) sizeof(xmlChar))));
+					 errdetail("libxml2 has incompatible char type: sizeof(char)=%zu, sizeof(xmlChar)=%zu.",
+							   sizeof(char), sizeof(xmlChar))));
 
 #ifdef USE_LIBXMLCONTEXT
 		/* Set up libxml's memory allocation our way */

src/bin/pg_basebackup/receivelog.c

@@ -150,10 +150,10 @@ open_walfile(StreamCtl *stream, XLogRecPtr startpoint)
 			/* if write didn't set errno, assume problem is no disk space */
 			if (errno == 0)
 				errno = ENOSPC;
-			pg_log_error(ngettext("write-ahead log file \"%s\" has %d byte, should be 0 or %d",
-								  "write-ahead log file \"%s\" has %d bytes, should be 0 or %d",
+			pg_log_error(ngettext("write-ahead log file \"%s\" has %zd byte, should be 0 or %d",
+								  "write-ahead log file \"%s\" has %zd bytes, should be 0 or %d",
 								  size),
-						 fn, (int) size, WalSegSz);
+						 fn, size, WalSegSz);
 			pg_free(fn);
 			return false;
 		}

src/bin/pg_waldump/pg_waldump.c

@@ -211,8 +211,8 @@ search_directory(const char *directory, const char *fname)
 				fatal_error("could not read file \"%s\": %m",
 							fname);
 			else
-				fatal_error("could not read file \"%s\": read %d of %zu",
-							fname, r, (Size) XLOG_BLCKSZ);
+				fatal_error("could not read file \"%s\": read %d of %d",
+							fname, r, XLOG_BLCKSZ);
 		}
 		close(fd);
 		return true;
@@ -369,9 +369,9 @@ WALDumpReadPage(XLogReaderState *state, XLogRecPtr targetPagePtr, int reqLen,
 						fname, errinfo.wre_off);
 		}
 		else
-			fatal_error("could not read from file %s, offset %u: read %d of %zu",
+			fatal_error("could not read from file %s, offset %u: read %d of %d",
 						fname, errinfo.wre_off, errinfo.wre_read,
-						(Size) errinfo.wre_req);
+						errinfo.wre_req);
 	}
 
 	return count;