Tweaks to build scripts

buildroot/share/PlatformIO/scripts/SAMD51_grandcentral_m4.py

@@ -8,8 +8,9 @@ from pprint import pprint
 
 Import("env")
 
-rxBuf = env["MARLIN_FEATURES"]["RX_BUFFER_SIZE"] if "RX_BUFFER_SIZE" in env["MARLIN_FEATURES"] else "0"
+mf = env["MARLIN_FEATURES"]
-txBuf = env["MARLIN_FEATURES"]["TX_BUFFER_SIZE"] if "TX_BUFFER_SIZE" in env["MARLIN_FEATURES"] else "0"
+rxBuf = mf["RX_BUFFER_SIZE"] if "RX_BUFFER_SIZE" in mf else "0"
+txBuf = mf["TX_BUFFER_SIZE"] if "TX_BUFFER_SIZE" in mf else "0"
 
 serialBuf = str(max(int(rxBuf), int(txBuf), 350))
 

buildroot/share/PlatformIO/scripts/fix_framework_weakness.py

@@ -31,11 +31,11 @@ if env.MarlinFeatureIsEnabled("POSTMORTEM_DEBUGGING"):
 
     print("Libmaple modified and ready for post mortem debugging")
 
-rxBuf = env["MARLIN_FEATURES"]["RX_BUFFER_SIZE"] if "RX_BUFFER_SIZE" in env["MARLIN_FEATURES"] else "0"
+mf = env["MARLIN_FEATURES"]
-txBuf = env["MARLIN_FEATURES"]["TX_BUFFER_SIZE"] if "TX_BUFFER_SIZE" in env["MARLIN_FEATURES"] else "0"
+rxBuf = mf["RX_BUFFER_SIZE"] if "RX_BUFFER_SIZE" in mf else "0"
+txBuf = mf["TX_BUFFER_SIZE"] if "TX_BUFFER_SIZE" in mf else "0"
 if int(rxBuf) < 64:
 	rxBuf = "64"
-
 if int(txBuf) < 64:
 	txBuf = "64"