MINOR: stream-int: replace si_cant_put() with si_rx_room_{blk,rdy}()

Remaining calls to si_cant_put() were all for lack of room and were
turned to si_rx_room_blk(). A few places where SI_FL_RXBLK_ROOM was
cleared by hand were converted to si_rx_room_rdy().

The now unused si_cant_put() function was removed.
diff --git a/src/cli.c b/src/cli.c
index 6329db1..199d25f 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -590,7 +590,7 @@
 			 * would want to return some info right after parsing.
 			 */
 			if (buffer_almost_full(si_ib(si))) {
-				si_cant_put(si);
+				si_rx_room_blk(si);
 				break;
 			}
 
@@ -693,7 +693,7 @@
 							cli_get_severity_output(appctx)) != -1)
 					appctx->st0 = CLI_ST_PROMPT;
 				else
-					si_cant_put(si);
+					si_rx_room_blk(si);
 				break;
 			case CLI_ST_PRINT_FREE: {
 				const char *msg = appctx->ctx.cli.err;
@@ -706,7 +706,7 @@
 					appctx->st0 = CLI_ST_PROMPT;
 				}
 				else
-					si_cant_put(si);
+					si_rx_room_blk(si);
 				break;
 			}
 			case CLI_ST_CALLBACK: /* use custom pointer */
@@ -746,7 +746,7 @@
 				if (ci_putstr(si_ic(si), prompt) != -1)
 					appctx->st0 = CLI_ST_GETREQ;
 				else
-					si_cant_put(si);
+					si_rx_room_blk(si);
 			}
 
 			/* If the output functions are still there, it means they require more room. */
@@ -834,7 +834,7 @@
 		chunk_printf(&trash, "%s\n", *var);
 
 		if (ci_putchk(si_ic(si), &trash) == -1) {
-			si_cant_put(si);
+			si_rx_room_blk(si);
 			return 0;
 		}
 		if (appctx->st2 == STAT_ST_END)
@@ -951,7 +951,7 @@
 		chunk_appendf(&trash, "\n");
 
 		if (ci_putchk(si_ic(si), &trash) == -1) {
-			si_cant_put(si);
+			si_rx_room_blk(si);
 			return 0;
 		}
 	skip:
@@ -1008,7 +1008,7 @@
 	if (ci_putchk(si_ic(si), &trash) == -1) {
 		chunk_reset(&trash);
 		chunk_printf(&trash, "[output too large, cannot dump]\n");
-		si_cant_put(si);
+		si_rx_room_blk(si);
 	}
 
 	/* dump complete */
@@ -1030,7 +1030,7 @@
 		case STAT_ST_INIT:
 			chunk_printf(&trash, "# socket lvl processes\n");
 			if (ci_putchk(si_ic(si), &trash) == -1) {
-				si_cant_put(si);
+				si_rx_room_blk(si);
 				return 0;
 			}
 			appctx->st2 = STAT_ST_LIST;
@@ -1099,7 +1099,7 @@
 						}
 
 						if (ci_putchk(si_ic(si), &trash) == -1) {
-							si_cant_put(si);
+							si_rx_room_blk(si);
 							return 0;
 						}
 					}
@@ -1413,7 +1413,7 @@
 	}
 
 	if (ci_putchk(si_ic(si), &trash) == -1) {
-		si_cant_put(si);
+		si_rx_room_blk(si);
 		return 0;
 	}