LR35902: Fix trailing whitespace in disassembly

CHANGES

@@ -17,6 +17,7 @@ Other fixes:
  - 3DS: Ensure core 2 can be used for threaded renderer (fixes mgba.io/i/1371)
  - GB Core: Fix toggling WIN and OBJ being swapped
  - All: Fix several memory leaks
+ - LR35902: Fix trailing whitespace in disassembly
 Misc:
  - Qt: Add missing HEVC NVENC option (fixes mgba.io/i/1323)
  - Qt: Improve camera initialization

src/lr35902/decoder.c

@@ -503,6 +503,9 @@ static int _decodeOperand(struct LR35902Operand op, char* buffer, int blen) {
 		return 0;
 	}
 
+	strncpy(buffer, " ", blen - 1);
+	ADVANCE(1);
+
 	if (op.flags & LR35902_OP_FLAG_MEMORY) {
 		strncpy(buffer, "[", blen - 1);
 		ADVANCE(1);
@@ -539,16 +542,16 @@ int LR35902Disassemble(struct LR35902InstructionInfo* info, char* buffer, int bl
 	int total = 0;
 	const char* cond = _lr35902Conditions[info->condition];
 
-	written = snprintf(buffer, blen - 1, "%s ", mnemonic);
+	written = snprintf(buffer, blen - 1, "%s", mnemonic);
 	ADVANCE(written);
 
 	if (cond) {
-		written = snprintf(buffer, blen - 1, "%s", cond);
+		written = snprintf(buffer, blen - 1, " %s", cond);
 		ADVANCE(written);
 
 		if (info->op1.reg || info->op1.immediate || info->op2.reg || info->op2.immediate) {
-			strncpy(buffer, ", ", blen - 1);
+			strncpy(buffer, ",", blen - 1);
-			ADVANCE(2);
+			ADVANCE(1);
 		}
 	}
 
@@ -559,8 +562,8 @@ int LR35902Disassemble(struct LR35902InstructionInfo* info, char* buffer, int bl
 
 	if (info->op2.reg || (!info->op1.immediate && info->opcodeSize > 1 && info->opcode[0] != 0xCB)) {
 		if (written) {
-			strncpy(buffer, ", ", blen - 1);
+			strncpy(buffer, ",", blen - 1);
-			ADVANCE(2);
+			ADVANCE(1);
 		}
 		written = _decodeOperand(info->op2, buffer, blen);
 		ADVANCE(written);