shithub: riscv

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fix printing a char from an empty string

--- a/sys/src/cmd/awk/run.c

+++ b/sys/src/cmd/awk/run.c

@@ -961,8 +961,9 @@

 					*p = '\0';

 				}

 			} else {

-				*p++ = getsval(x)[0];

-				*p = 0;

+				if((*p = getsval(x)[0]) != '\0')

+					p++;

+				*p = '\0';

 			}

 			break;

 		}