Fixed FPP related memory leak #532

Job	Run time
firmware (espsv3, esp8266)	2m 44s
firmware (d1_mini, esp8266)	1m 52s
firmware (d1_mini_pro, esp8266)	2m 33s
firmware (esp01s, esp8266)	2m 45s
firmware (d1_mini32, esp32)	2m 34s
firmware (d1_mini32_eth, esp32)	2m 32s
firmware (d32_pro, esp32)	2m 51s
firmware (esp32_cam, esp32)	2m 19s
firmware (d32_pro_eth, esp32)	1m 55s
firmware (esp32_ttgo_t8, esp32)	1m 56s
firmware (esp32_wt32eth01, esp32)	2m 3s
firmware (esp32_quinled_dig_octa, esp32)	2m 54s
firmware (esp32_quinled_quad, esp32)	3m 5s
firmware (esp32_quinled_quad_ae_plus, esp32)	2m 51s
firmware (esp32_quinled_quad_ae_plus_8, esp32)	1m 51s
firmware (esp32_quinled_quad_eth, esp32)	2m 34s
firmware (esp32_quinled_uno, esp32)	2m 13s
firmware (esp32_quinled_uno_ae_plus, esp32)	2m 32s
firmware (esp32_quinled_uno_eth, esp32)	2m 47s
firmware (esp32_quinled_uno_eth_espsv3, esp32)	2m 57s
firmware (d1_mini_mhetesp32minikit, esp32)	2m 27s
firmware (olimex_esp32_gw, esp32)	3m 35s
firmware (d1_mini_twilightlord, esp32)	2m 58s
firmware (d1_mini_twilightlord_eth, esp32)	1m 58s
firmware (esp32_devkitc, esp32)	1m 54s
firmware (m5stack_atom, esp32)	2m 26s
firmware (esp3deuxquatro_dmx, esp32)	2m 47s
package	58s
release	0s
	1h 8m 51s

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