msvcrt/tests: remove unused assignments (LLVM/Clang)

[Austin English]

-- 
-Austin
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diff --git a/dlls/msvcrt/tests/file.c b/dlls/msvcrt/tests/file.c
index 0231f72..ec6fd38 100644
--- a/dlls/msvcrt/tests/file.c
+++ b/dlls/msvcrt/tests/file.c
@@ -357,25 +357,25 @@ static void test_asciimode(void)
     fclose(fp);
 
     fp = fopen("ascii.tst", "r");
-    c= fgetc(fp);
-    c= fgetc(fp);
+    fgetc(fp);
+    fgetc(fp);
     fseek(fp,0,SEEK_CUR);
     for(i=1; i<10; i++) {
 	ok((j = ftell(fp)) == i*3, "ftell fails in TEXT mode\n");
 	fseek(fp,0,SEEK_CUR);
 	ok((c = fgetc(fp)) == '0'+ i, "fgetc after fseek failed in line %d\n", i);
-	c= fgetc(fp);
+	fgetc(fp);
     }
     /* Show that fseek doesn't skip \\r !*/
     rewind(fp);
-    c= fgetc(fp);
+    fgetc(fp);
     fseek(fp, 2 ,SEEK_CUR);
     for(i=1; i<10; i++) {
 	ok((c = fgetc(fp)) == '0'+ i, "fgetc after fseek with pos Offset failed in line %d\n", i);
 	fseek(fp, 2 ,SEEK_CUR);
     }
     fseek(fp, 9*3 ,SEEK_SET);
-    c = fgetc(fp);
+    fgetc(fp);
     fseek(fp, -4 ,SEEK_CUR);
     for(i= 8; i>=0; i--) {
 	ok((c = fgetc(fp)) == '0'+ i, "fgetc after fseek with neg Offset failed in line %d\n", i);