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[cc2] fix qbe call instruction parameters generation

qbe parser doesn't accept newlines in call PARAMS sets.

--- a/cc2/arch/qbe/code.c

+++ b/cc2/arch/qbe/code.c

@@ -133,8 +133,8 @@

 	[ASCALLL] = {.fun = call, .letter = 'l'},

 	[ASCALLD] = {.fun = call, .letter = 'd'},

 	[ASCALL] = {.fun = ecall},

-	[ASPAR] = {.fun = param, .txt = "\t\t%s %s,\n"},

-	[ASPARE] = {.fun = param, .txt = "\t\t%s %s\n"},

+	[ASPAR] = {.fun = param, .txt = "%s %s, "},

+	[ASPARE] = {.fun = param, .txt = "%s %s"},

 };

 static char buff[ADDR_LEN];

@@ -415,7 +415,7 @@

        strcpy(to, addr2txt(&pc->to));

        strcpy(from, addr2txt(&pc->from1));

-       printf("\t%s =%c\tcall\t%s(\n", to, p->letter, from);

+       printf("\t%s =%c\tcall\t%s(", to, p->letter, from);

 }

 static void

@@ -430,7 +430,7 @@

 static void

 ecall(void)

 {

-	puts("\t\t)");

+	puts(")");

 }

 static void