Convert zero-output EXPECT_ERR=<<EOF to single-line EXPECT_ERR= (#4744)

test/db/abi/languages/freepascal

@@ -18,8 +18,7 @@ pdf
 EOF
 EXPECT=<<EOF
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN
 
 NAME=LANGUAGES : freepascal detection

test/db/analysis/avr

@@ -778,8 +778,7 @@ aae
 EOF
 EXPECT=<<EOF
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN
 
 NAME=avr stop analysis when invalid instruction is found

test/db/archos/linux-x64/dbg_trace

@@ -71,6 +71,5 @@ main+8
 entry0+41
 EOF
 REGEXP_FILTER_ERR=ERROR.*\n
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN

test/db/cmd/cmd_rop

@@ -600,6 +600,5 @@ Gadget size: 12
 Gadget size: 10
 
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN

test/db/cmd/project

@@ -408,6 +408,5 @@ nth addr         vt_offset type    name
 1   0x00000100  ---------- DEFAULT Meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeethod
 
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN

test/db/cmd/warnings

@@ -4,6 +4,5 @@ CMDS=<<EOF
 EOF
 EXPECT=<<EOF
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN

test/db/formats/elf/obj

@@ -5,8 +5,7 @@ CMDS=ie~addr
 EXPECT=<<EOF
 vaddr=0x00000000 paddr=0x00000040 baddr=0x00000000 laddr=0x00000000 haddr=0x00000018 type=program
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN
 
 NAME=obj entry

test/db/io/cache

@@ -163,6 +163,5 @@ wx 90
 wc-*
 wx 90
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN

test/db/tools/rz

@@ -103,8 +103,7 @@ CMDS=!rizin -i scripts/no-nl-at-eof.rz -Nq =
 EXPECT=<<EOF
 1
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN
 
 NAME=rizin -i -Q with missing script
@@ -139,8 +138,7 @@ RUN
 NAME=rizin empty -R
 FILE==
 CMDS=!rizin -R ""
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN
 
 NAME=rizin project with explicit file

test/db/tools/rz_bin

@@ -879,8 +879,7 @@ RUN
 NAME=rz-bin -D Invalid
 FILE==
 CMDS=!rz-bin -D Invalid XXXXX
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 EXPECT=<<EOF
 Language 'Invalid' is unsupported
 List of supported languages:

test/db/tools/rz_hash

@@ -179,8 +179,7 @@ CMDS=!rz-hash -a luhn -s "5105105105105100"
 EXPECT=<<EOF
 string: 0x00000000-0x00000010 luhn: 0
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN
 
 NAME=rz-hash -a luhn -s "4408041234567890"
@@ -189,8 +188,7 @@ CMDS=!rz-hash -a luhn -s "4408041234567890"
 EXPECT=<<EOF
 string: 0x00000000-0x00000010 luhn: 7
 EOF
-EXPECT_ERR=<<EOF
-EOF
+EXPECT_ERR=
 RUN
 
 NAME=rz-hash -a luhn -s "1567jdjaskldsa" INVALID