Remove dead code in libmbfl, memory device

Author: Girgias

ext/mbstring/libmbfl/mbfl/mbfl_memory_device.c

@@ -148,14 +148,6 @@ mbfl_memory_device_output(int c, void *data)
 			/* overflow */
 			return -1;
 		}
-
-		newlen = device->length + device->allocsz;
-		tmp = (unsigned char *)mbfl_realloc((void *)device->buffer, newlen);
-		if (tmp == NULL) {
-			return -1;
-		}
-		device->length = newlen;
-		device->buffer = tmp;
 	}
 
 	device->buffer[device->pos++] = (unsigned char)c;
@@ -176,14 +168,6 @@ mbfl_memory_device_output2(int c, void *data)
 			/* overflow */
 			return -1;
 		}
-
-		newlen = device->length + device->allocsz;
-		tmp = (unsigned char *)mbfl_realloc((void *)device->buffer, newlen);
-		if (tmp == NULL) {
-			return -1;
-		}
-		device->length = newlen;
-		device->buffer = tmp;
 	}
 
 	device->buffer[device->pos++] = (unsigned char)((c >> 8) & 0xff);
@@ -206,14 +190,6 @@ mbfl_memory_device_output4(int c, void* data)
 			/* overflow */
 			return -1;
 		}
-
-		newlen = device->length + device->allocsz;
-		tmp = (unsigned char *)mbfl_realloc((void *)device->buffer, newlen);
-		if (tmp == NULL) {
-			return -1;
-		}
-		device->length = newlen;
-		device->buffer = tmp;
 	}
 
 	device->buffer[device->pos++] = (unsigned char)((c >> 24) & 0xff);
@@ -245,15 +221,6 @@ mbfl_memory_device_strncat(mbfl_memory_device *device, const char *psrc, size_t
 			/* overflow */
 			return -1;
 		}
-
-		newlen = device->length + len + MBFL_MEMORY_DEVICE_ALLOC_SIZE;
-		tmp = (unsigned char *)mbfl_realloc((void *)device->buffer, newlen);
-		if (tmp == NULL) {
-			return -1;
-		}
-
-		device->length = newlen;
-		device->buffer = tmp;
 	}
 
 	w = &device->buffer[device->pos];
@@ -307,19 +274,6 @@ mbfl_wchar_device_output(int c, void *data)
 			/* overflow */
 			return -1;
 		}
-
-		newlen = device->length + device->allocsz;
-		if (newlen > SIZE_MAX / sizeof(int)) {
-			/* overflow */
-			return -1;
-		}
-
-		tmp = (unsigned int *)mbfl_realloc((void *)device->buffer, newlen*sizeof(int));
-		if (tmp == NULL) {
-			return -1;
-		}
-		device->length = newlen;
-		device->buffer = tmp;
 	}
 
 	device->buffer[device->pos++] = c;