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Removed UB in PutArmsEnergy

Signed-off-by: Gabriel Ravier <[email protected]>

--- a/src/MycParam.cpp

+++ b/src/MycParam.cpp

@@ -271,6 +271,9 @@

 	RECT rcExpFlash = {40, 80, 80, 88};

 	int lv = gArmsData[gSelectedArms].level - 1;

+	if (lv < 0)	// Detect the case where the level is 0 (no weapon)

+		lv = 0;	// Set lv to a safe value

+

 	int arms_code = gArmsData[gSelectedArms].code;

 	int exp_now = gArmsData[gSelectedArms].exp;

 	int exp_next = gArmsLevelTable[arms_code].exp[lv];